Directions: Solve each CAT sample quantitative ability problem and indicate the best of the answer choices given..
Numbers: All numbers used are real numbers.
Figures: A figure accompanying a CAT sample quantitatove ability problem solving question is intended to provide information useful in solving the problem. Figures are drawn as accurately as possible EXCEPT when it is stated in a specific problem that its figure is not drawn to scale. straight lines may sometimes appear jagged. All figures lie on a plane unless otherwise indicated.
Following are some CAT sample quantitative ability questions.
- A rectangle is 14 cm long and 10 cm wide. If the length is reduced by x cms
and its width is increased also by x cms so as to make it a square then its area
changes by :
- 4
- 144
- 12
- 2
- None of the above.
Ans : A
- A motorcycle stunts man belonging to a fair, rides over the vertical walls
of a circular well at an average speed of 54 kph for 5 minutes. If the radius of
the well is 5 meters then the distance traveled is:
- 2.5 kms
- 3.5 kms
- 4.5 kms
- 5.5 kms
- None of the above
Ans : C
- If 1 cm on a map corresponds to an actual distance of 40 kms. And the
distance on the map between Bombay and Calcutta is 37.5 cms., the actual
distance between them is :
- 375 kms
- 3750 kms
- 1500 kms
- 1375 kms
- None of the above
Ans : C
- A box contains 90 mts each of 100 gms and 100 bolts each of 150 gms. If the
entire box weighs 35.5 kg., then the weight of the empty box is :
- 10 kg
- 10.5 kg
- 11 kg
- 11.5 kg
- None of the above
Ans : D
- If the radius of a circle is increased by 20% then the area is increased by
:
- 44%
- 120%
- 144%
- 40%
- None of the above
Ans : A
- Tom, Dick and Harry went for lunch to a restaurant. Tom had $100 with him,
Dick had $60 and Harry had $409. They got a bill for $104 and decided to give a
tip of $16. They further decided to share the total expenses in the ratio of the
amounts of money each carried. The amount of money which Tom paid more than what
Harry paid is
- 120
- 200
- 60
- 24
- 36
Ans : E
- If 3/p = 6 and 3/q = 15 then p - q = ?
- 1/3
- 2/5
- 3/10
- 5/6
- None of the above
Ans : C
- A father is three times as old as his son. After fifteen years the father
will be twice as old as his son's age at that time. Hence the father's present
age is
- 36
- 42
- 45
- 48
- None of the above
Ans : C
- (1/4)3 + (3/4)3 + 3(1/4)(3/4)(1/4 + 3/4) =?
- 1/64
- 27/64
- 49/64
- 0
- 1
Ans : E
- If the area of two circles are in the ratio 169 : 196 then the ratio of
their radii is
- 10 : 11
- 11 : 12
- 12 : 13
- 13 : 14
- None of the above
Ans : D
- Which of the following is the greatest ?
- 40% of 30
- 3/5 of 25
- 6.5% of 200
- Five more than the square of 3
- 1/2-4
Ans : E
- Two identical taps fill 2/5 of a tank in 20 minutes. When one of the taps
goes dry in how many minutes will the remaining one tap fill the rest of the
tank ?
- 5 minutes
- 10 minutes
- 15 minutes
- 20 minutes
- None of the above
Ans : C
- If the value of XYZ Company stock drops from $25 per share to $21 per share,
what is the percent of the decrease?
- 4
- 8
- 12
- 16
- 20
Ans : D
- If a building b feet high casts a shadow f feet long, then, at the same time
of day, a tree t feet high will cast a shadow how many feet long?
- ft/b
- fb/t
- b/ft
- tb/f
- t/fb
Ans : A
- If x, y, and z are consecutive negative integers, and if x > y > z,
which of the following must be a positive odd integer?
- xyz
- (x - y) (y - z)
- x - yz
- x(y + z)
- x + y + z
Ans : B
- At a certain ice cream parlor, customers can choose among five different ice
cream flavors and can choose either a sugar cone or a waffle cone. Considering
both ice cream flavor and cone type, how many distinct triple-scoop cones with
three different ice cream flavors are available?
- 12
- 16
- 20
- 24
- 30
Ans : C
- What is the greatest value of a positive integer n such that 3n is a factor
of 1815?
- 15
- 18
- 30
- 33
- 45
Ans : C
- If .2t = 2.2 - .6s and .5s = .2t + 1.1, then s =
- 1
- 3
- 10
- 11
- 30
Ans : B
- Five years ago, Beth's age was three times that of Amy.
Ten years ago, Beth's age was one half that of Chelsea. If C repre- sents
Chelsea's current age, which of the following represents Amy's current age?
- c/6 + 5
- 2c
- (c-10)/3
- 3c-5
- 5c/3 - 10
Ans : A
- A portion of $7200 is invested at a 4% annual return,
while the remainder is invested at a 5% annual return. If the annual income from
both portions is the same, what is the total income from the two investments?
- $160
- $320
- $400
- $720
- $1,600
Ans : B
- An empty swimming pool can be filled to capacity through
an inlet pipe in 3 hours, and it can be completely drained by a drainpipe in 6
hours. If both pipes are fully open at the same time, in how many hours will the
empty pool be filled to capacity?
- 4
- 4.5
- 5
- 5.5
- 6
Ans : E
- If r = (3p + q)/2 and s = p - q, for which of the
following values of p would r2 = s2?
- 1q/5
- 10 - 3q/2
- q - 1
- 3q
- 9q/2 - 9
Ans : A
- At 10 a.m. two trains started traveling toward each
other from stations 287 miles apart. They passed each other at 1:30 p.m. the
same day. If the average speed of the faster train exceeded the average speed of
the slower train by 6 miles per hour, which of the following represents the
speed of the faster train, in miles per hour?
- 38
- 40
- 44
- 48
- 50
Ans : C
- On the xy-coordinate plane, points A and B both lie on
the circumference of a circle whose center is O, and the length of AB equals the
circle's diameter. If the (x,y) coordinates of O are (2,1) and the (x,y)
coordinates of B are (4,6), what are the (x,y) coordinates of A?
- (3, 3/2)
- (1, 2/2)
- (0, -4)
- (2/2, 1)
- (-1, -2/2)
Ans : C
- If a rectangle's length and width are both doubled, by
what percent is the rectangle's area increased?
- 50
- 100
- 200
- 300
- 400
Ans : D
- A rectangular tank 10" by 8" by 4" is filled with water.
If all of the water is to be transferred to cube-shaped tanks, each one 3 inches
on a side, how many of these smaller tanks are needed?
- 9
- 12
- 16
- 21
- 39
Ans : B
- Point Q lies at the center of the square base (ABCD) of
the pyramid pictured above. The pyramid's height (PQ) measures exactly one half
the length of each edge of its base, and point E lies exactly halfway between C
and D along one edge of the base. What is the ratio of the surface area of any
of the pyramid's four triangular faces to the surface area of the shaded
triangle?
- 3 :√2
- √5:1
- 4√3:3
- 2√2:1
- 8:√5
Ans : D
- The average wages of a worker during a fortnight
comprising 15 consecutive working days was Rs.90 per day. During the first 7
days, his average wages was Rs.87/day and the average wages during the last 7
days was Rs.92 /day. What was his wage on the 8th day?
- 83
- 92
- 90
- 97
Ans : D
- The average of 5 quantities is 6. The average of 3 of
them is 8. What is the average of the remaining two numbers?
- 6.5
- 4
- 3
- 3.5
Ans : C
- The average temperature on Wednesday, Thursday and
Friday was 250. The average temperature on Thursday, Friday and Saturday was
240. If the temperature on Saturday was 270, what was the temperature on
Wednesday?
- 240
- 210
- 270
- 300
Ans : D
- The average age of a group of 12 students is 20years. If
4 more students join the group, the average age increases by 1 year. The average
age of the new students is
- 24
- 26
- 23
- 22
Ans : A
- When a student weighing 45 kgs left a class, the average
weight of the remaining 59 students increased by 200g. What is the average
weight of the remaining 59 students?
- 57 kgs
- 56.8 kgs
- 58.2 kgs
- 52.2 kgs
Ans : A
- Three math classes: X, Y, and Z, take an algebra test.
The average score in class X is 83.
The average score in class Y is 76.
The average score in class Z is 85.
The average score of all students in classes X and Y together is 79.
The average score of all students in classes Y and Z together is 81.What is the average for all the three classes?
- 81
- 81.5
- 82
- 84.5
Ans : B
- The average weight of a class of 24 students is 36
years. When the weight of the teacher is also included, the average weight
increases by 1kg. What is the weight of the teacher?
- 60 kgs
- 61 kgs
- 37 kgs
- None of these
Ans : B
- The average of 5 quantities is 10 and the average of 3
of them is 9. What is the average of the remaining 2?
- 11
- 12
- 11.5
- 12.5
Ans : C
- The average age of a family of 5 members is 20 years. If
the age of the youngest member be 10 years then what was the average age of the
family at the time of the birth of the youngest member?
- 13.5
- 14
- 15
- 12.5
Ans : D
- A student finds the average of 10 positive integers.
Each integer contains two digits. By mistake, the boy interchanges the digits of
one number say ba for ab. Due to this, the average becomes 1.8 less than the
previous one. What was the difference of the two digits a and b?
- 8
- 6
- 2
- 4
Ans : C
- Average cost of 5 apples and 4 mangoes is Rs. 36. The average cost of 7
apples and 8 mangoes is Rs. 48. Find the total cost of 24 apples and 24 mangoes.
- 1044
- 2088
- 720
- 324
Ans : B
- A father left a will of Rs.35 lakhs between his two
daughters aged 8.5 and 16 such that they may get equal amounts when each of them
reach the age of 21 years. The original amount of Rs.35 lakhs has been
instructed to be invested at 10% p.a. simple interest. How much did the elder
daughter get at the time of the will?
- Rs. 17.5 lakhs
- Rs. 21 lakhs
- Rs. 15 lakhs
- Rs. 20 lakhs
Ans : B
- What will Rs.1500 amount to in three years if it is
invested in 20% p.a. compound interest, interest being compounded annually?
- 2400
- 2592
- 2678
- 2540
Ans : B
- If a sum of money grows to 144/121 times when invested
for two years in a scheme where interest is compounded annually, how long will
the same sum of money take to treble if invested at the same rate of interest in
a scheme where interest is computed using simple interest method?
- 9 years
- 22 years
- 18 years
- 33 years
Ans : B
- The population of a town was 3600 three years back. It
is 4800 right now. What will be the population three years down the line, if the
rate of growth of population has been constant over the years and has been
compounding annually?
- 6000
- 6400
- 7200
- 9600
Ans : B
- A man invests Rs.5000 for 3 years at 5% p.a. compound
interest reckoned yearly. Income tax at the rate of 20% on the interest earned
is deducted at the end of each year. Find the amount at the end of the third
year.
- 5624.32
- 5630.50
- 5788.125
- 5627.20
Ans : A
- The difference between the compound interest and the
simple interest on a certain sum at 12% p.a. for two years is Rs.90. What will
be the value of the amount at the end of 3 years?
- 9000
- 6250
- 8530.80
- 8780.80
Ans : D
- Vijay invested Rs.50,000 partly at 10% and partly at
15%. His total income after a year was Rs.7000. How much did he invest at the
rate of 10%?
- Rs.40,000
- Rs.40,000
- Rs.12,000
- Rs.20,000
Ans : B
- A sum of money invested for a certain number of years at
8% p.a. simple interest grows to Rs.180. The same sum of money invested for the
same number of years at 4% p.a. simple interest grows to Rs.120 only. For how
many years was the sum invested?
- 25 years
- 40 years
- 33 years and 4 months
- Cannot be determined
Ans : A
- How long will it take for a sum of money to grow from
Rs.1250 to Rs.10,000, if it is invested at 12.5% p.a simple interest?
- 8 years
- 64 years
- 72 years
- 56 years
Ans : D
- Rs. 5887 is divided between Shyam and Ram, such that
Shyam's share at the end of 9 years is equal to Ram's share at the end of 11
years, compounded annually at the rate of 5%. Find the share of Shyam.
- 2088
- 2000
- 3087
- None of these
Ans : C
- Find the coordinates of the point which divides the line joining (5, -2) and
(9, 6) internally in the ratio 1 : 3.
- (6, 0)
- (6, 3)
- (0, 6)
- (3, 6)
Ans : A
- Find the number of triangles in an octagon.
- 326
- 120
- 56
- Cannot be determined
Ans : C
- Find the equation of a line whose intercepts are twice of the line 3x - 2y -
12 = 0
- 3x - 2y = 24
- 2x - 3y = 12
- 2x - 3y = 24
- None of these
Ans : A
- Find the area of the sector covered by the hour hand after it has moved
through 3 hours and the length of the hour hand is 7cm.
- 77 sq.cm
- 38.5 sq.cm
- 35 sq.cm
- 70 sq.cm
Ans : B
- Find the area of the triangle whose vertices are (-6, -2), (-4, -6), (-2,
5).
- 36
- 18
- 15
- 30
Ans : C
- A stairway 10ft high is such that each step accounts for half a foot upward
and one-foot forward. What distance will an ant travel if it starts from ground
level to reach the top of the stairway?
- 30 ft
- 33 ft
- 10 ft
- 29 ft
Ans : D
- Each interior angle of a regular polygon is 120 degrees greater than each
exterior angle. How many sides are there in the polygon?
- 6
- 8
- 12
- 3
Ans : C
- What is the area of the largest triangle that can be fitted into a rectangle
of length 'l' units and width 'w' units?
- lw/3
- (2lw)/3
- (3lw)/4
- (lw)/2
Ans : D
- Which of the following is inCorrect?
- An incentre is a point where the angle bisectors meet.
- The median of any side of a triangle bisects the side at right angle.
- The point at which the three altitudes of a triangle meet is the orthocentre
- The point at which the three perpendicular bisectors meet is the centre of the circumcircle.
Ans : B
- A and B are two points with the co-ordinates (-2, 0) and (0, 5). What is the
length of the diagonal AC if AB form one of the sides of the square ABCD?
- units
- units
- units
- units
Ans : B
- A regular hexagon is inscribed in a circle of radius r cms. What is the
perimeter of the regular hexagon?
- 3r
- 6r
- r
- 9r
Ans : B
- A 4 cm cube is cut into 1 cm cubes. What is the percentage increase in the
surface area after such cutting?
- 4%
- 300%
- 75%
- 400%
Ans : B
- If the diagonal and the area of a rectangle are 25 m and 168 m2, what is the
length of the rectangle?
- 17 m
- 31 m
- 12 m
- 24 m
Ans : D
- The surface area of the three coterminous faces of a cuboid are 6, 15, 10
sq.cm respectively. Find the volume of the cuboid.
- 30
- 20
- 40
- 35
Ans : A
- If each interior angle of a regular polygon is 150 degrees, then it is
- Octagon
- Decagon
- Dodecagon
- Tetrahedron
Ans : C
- Two numbers when divided by a certain divisor leave remainders of 431 and
379 respectively. When the sum of these two numbers is divided by the same
divisor, the remainder is 211. What is the divisor?
- 599
- 1021
- 263
- Cannot be determined
Ans : A
- How many zeros contained in 100!?
- 100
- 24
- 97
- Cannot be determined
Ans : B
- Which is greater of the two
- 2300
- 3200
- Both are equal
- Cannot be determined
Ans : B
- What is the value of M and N respectively? If M39048458N is divisible by 8
& 11; Where M & N are single digit integers?
- 7, 8
- 8, 6
- 6, 4
- 5, 4
Ans : C
- When 26854 and 27584 are divided by a certain two digit prime number, the
remainder obtained is 47. Which of the following choices is a possible value of
the divisor?
- 61
- 71
- 73
- 89
Ans : C
- Find the G.C.D of 12x2y3z2, 18x3y2z4, and 24xy4z3
- 6xy2z2
- 6x3y4z3
- 24xy2z2
- 18x2y2z3
Ans : A
- Find the G.C.D of 12x2y3z2, 18x3y2z4, and 24xy4z3
- 6xy2z2
- 6x3y4z3
- 24xy2z2
- 18x2y2z3
Ans : A
- The 7th digit of (202)3is
- 2
- 4
- 8
- 6
Ans : C
- A railway half ticket costs half the full fare and the reservation charge is
the same on half ticket as on full ticket. One reserved first class ticket from
Chennai to Trivandrum costs Rs. 216 and one full and one half reserved first
class tickets cost Rs. 327. What is the basic first class full fare and what is
the reservation charge?
- Rs. 105 and Rs. 6
- Rs. 216 and Rs. 12
- Rs. 210 and Rs. 12
- Rs. 210 and Rs. 6
Ans :D
- Find the range of real values of x satisfying the inequalities 3x - 2 > 7
and 4x - 13 > 15.
- x > 3
- x > 7
- x < 7
- x < 3
Ans :B
- How many words of 4 consonants and 3 vowels can be made from 12 consonants
and 4 vowels, if all the letters are different?
- 16C7 * 7!
- 12C4 * 4C3 * 7!
- 12C3 * 4C4
- 12C4 * 4C3
Ans : B
- In how many ways can 5 letters be posted in 3 post boxes, if any number of
letters can be posted in all of the three post boxes?
- 5C3
- 5P3
- 53
- 35
Ans : D
- How many number of times will the digit '7' be written when listing the
integers from 1 to 1000?
- 271
- 300
- 252
- 304
Ans : B
- There are 6 boxes numbered 1, 2,...6. Each box is to be filled up either
with a red or a green ball in such a way that at least 1 box contains a green
ball and the boxes containing green balls are consecutively numbered. The total
number of ways in which this can be done is
- 5
- 21
- 33
- 60
Ans : B
- What is the value of 1*1! + 2*2! + 3!*3! + ............ n*n!, where n! means
n factorial or n(n-A(n-2)...1
- n(n-A(n-A!))
- (n+A!)/(n(n-A))
- (n+A! - n!)
- (n + A! - 1!)
Ans : D
- There are 5 Rock songs, 6 Carnatic songs and 3 Indi pop songs. How many
different albums can be formed using the above repertoire if the albums should
contain at least 1 Rock song and 1 Carnatic song?
- 15624
- 16384
- 6144
- 240
Ans : A
- In how many ways can the letters of the word MANAGEMENT be rearranged so
that the two As do not appear together?
- 10! - 2!
- 9! - 2!
- 10! - 9!
- None of these
Ans : D
- How many five digit numbers can be formed using the digits 0, 1, 2, 3, 4 and
5 which are divisible by 3, without repeating the digits?
- 15
- 96
- 216
- 120
Ans : C
- How many words can be formed by re-arranging the letters of the word
PROBLEMS such that P and S occupy the first and last position respectively?
- 8! / 2!
- 8! - 2!
- 6!
- 8! - 2*7!
Ans : C
- Four dice are rolled simultaneously. What is the number of possible outcomes
in which at least one of the die shows 6?
- 6! / 4!
- 625
- 671
- 1296
Ans : C
- Rajesh traveled from city A to city B covering as much
distance in the second part as he did in the first part of this journey. His
speed during the second part was twice as that of the speed during the first
part of the journey. What is his average speed of journey during the entire
travel?
- His average speed is the harmonic mean of the individual speeds for the two parts.
- His average speed is the arithmetic mean of the individual speeds for the two parts.
- His average speed is the geometric mean of the individual speeds for the two parts.
- Cannot be determined.
Ans : B
- Two boys begin together to write out a booklet
containing 535 lines. The first boy starts with the first line, writing at the
rate of 100 lines an hour; and the second starts with the last line then writes
line 534 and so on, backward proceeding at the rate of 50 lines an hour. At what
line will they meet?
- 356
- 277
- 357
- 267
Ans : C
- A man and a woman 81 miles apart from each other, start travelling towrds
each other at the same time. If the man covers 5 miles per hour to the women's 4
miles per hour, how far will the woman have travelled when they meet?
- 27
- 36
- 45
- None of these.
Ans : B
- The speed of a motor boat itself is 20 km/h and the rate of flow of the
river is 4 km/h. Moving with the stream the boat went 120 km. What distance will
the boat cover during the same time going against the stream?
- 80 km
- 180 km
- 60 km
- 100 km
Ans : A
- Two friends A and B run around a circular track of length 510 metres,
starting from the same point, simultaneously and in the same direction. A who
runs faster laps B in the middle of the 5th round. If A and B were to run a 3 km
race long race, how much start, in terms of distance, should A give B so that
they finish the race in a dead heat?
- 545.45 metres
- 666.67 metres
- 857.14 metres
- Cannot be determined
Ans : B
- I travel the first part of my journey at 40 kmph and the second part at 60
kmph and cover the total distance of 240 km to my destination in 5 hours. How
long did the first part of my journey last?
- 4 hours
- 2 hours
- 3 hours
- 2 hours 24 minutes
Ans : C
- By walking at 3/4th of his usual speed, a man reaches office 20 minutes
later than usual. What is his usual time?
- 30 min
- 60 min
- 70 min
- 50 min
Ans : B
- A passenger train covers the distance between stations X and Y, 50 minutes
faster than a goods train. Find this distance if the average speed of the
passenger train is 60 kmph and that of goods train is 20 kmph.
- 20 kms
- 25 kms
- 45 kms
- 40 kms
Ans : B
- Yana and Gupta leave points x and y towards y and x respectively
simultaneously and travel in the same route. After meeting each other on the
way, Yana takes 4 hours to reach her destination, while Gupta takes 9 hours to
reach his destination. If the speed of Yana is 48 km/hr, what is the speed of
Gupta?
- 72 kmph
- 32 mph
- 20 mph
- None of these
Ans : C
- Ram covers a part of the journey at 20 kmph and the balance at 70 kmph
taking total of 8 hours to cover the distance of 400 km. How many hours has been
driving at 20 kmph?
- 2 hours
- 3 hours 20 minutes
- 4 hours 40 minutes
- 3 hours 12 minutes
Ans : D
- Find the sum of all the integers which are multiples of 7 and lie between
200 and 400.
- 8729
- 8700
- 8428
- None of these
Ans : A
- How many digits will the number 3200 have if the value of log 3 =
0.4771?
- 95
- 94
- 96
- None of these
Ans : C
- A and B enter in to a partnership and A invests Rs. 10,000 in the
partnership. At the end of 4 months he withdraws Rs.2000. At the end of another
5 months, he withdraws another Rs.3000. If B receives Rs.9600 as his share of
the total profit of Rs.19,100 for the year, how much did B invest in the
company?
- 12,000
- 96,000
- 8000
- 6000
Ans : C
- The sum of the first and the 9th of an arithmetic progression is 24. What is
the sum of the first nine terms of the progression?
- 216
- 108
- 54
- None of these
Ans : B
- What is the equation of the line that is parallel to the line 3x + 7y = 10
and passes through the point (4, 8)
- 7x - 3y = 46
- 3x + 7y = 44
- 9x + 21y - 184 = 0
- 3x + 7y = 68
Ans : D
- Ram and Shyam take a vacation at their grandparents' house. During the
vacation, they do any activity together. They either played tennis in the
evening or practiced Yoga in the morning, ensuring that they do not undertake
both the activities on any single day. There were some days when they did
nothing. Out of the days that they stayed at their grandparents' house, they
involved in one of the two activities on 22 days. However, their grandmother
while sending an end of vacation report to their parents stated that they did
not do anything on 24 mornings and they did nothing on 12 evenings. How long was
their vacation?
- 36 days
- 14 days
- 29 days
- Cannot be determined.
Ans : C
- Ram buys Rs.100 shares at Rs.112. If he sells the shares after a year at
Rs.132 after receiving a dividend of 8% just before selling, what is the net
yield on his investment?
- 17.85%
- 6.06%
- 32%
- 25%
Ans : D
- The sum of 20 terms of the series 12 + 22, 32 + 42, 52 + 62 is:
- 210
- 519
- 190
- None of these.
Ans : A
- A tank is fitted with 8 pipes, some of them that fill the tank and others
that are waste pipe meant to empty the tank. Each of the pipes that fill the
tank can fill it in 8 hours, while each of those that empty the tank can empty
it in 6 hours. If all the pipes are kept open when the tank is full, it will
take exactly 6 hours for the tank to empty. How many of these are fill pipes?
- 2
- 4
- 6
- 5
Ans : B
- If A and B work together, they will complete a job in 7.5 days. However, if
A works alone and completes half the job and then B takes over and completes the
remaining half alone, they will be able to complete the job in 20 days. How long
will B alone take to do the job if A is more efficient than B?
- 20 days
- 40 days
- 30 days
- 24 days
Ans : C