### Aptitude - Ratio And Proportion Question And Answers

What is the ratio of third proportional to 12 and 30 and the mean proportional between 9 and 25 is?

A.  5 : 1

B.  1 : 5

C.  5 : 2

D.  2 : 5

A bag contains 50p, 25p and 10p coins in the ratio 5 : 9 : 4 amounting to Rs.206. Find the number of coins of 10p?

A.  206

B.  200

C.  360

D.  160

In a class, there are 100 students and among them 40 are girls. What is the ratio of the number of boys to the number of girls?

A.  3 : 2

B.  2 : 3

C.  1 : 1

D.  3 : 4

The Ratio of Science and Arts students in a college is 4:3. If 14 Science students shift to Arts then the ratio becomes 1:1. Find the total strength of students in both science and arts together

A.  196

B.  206

C.  296

D.  306

If 0.75 : Z : : 5 : 8, then Z is equal to

A.  1.1

B.  1.2

C.  1.3

D.  1.4

Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is:

A.  2 : 5

B.  3 : 5

C.  4 : 5

D.  7 : 5

A and B together have Rs. 1210. If 4/15 of A's amount is equal to 2/5 of B's amount, how much amount does B have?

A.  Rs. 460

B.  Rs. 484

C.  Rs. 550

D.  Rs. 664

A sum of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B's share?

A.  Rs. 500

B.  Rs. 1000

C.  Rs. 1500

D.  Rs. 2000

Seats for Mathematics, Physics and Biology in a school are in the ratio 5 : 7 : 8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?

A.  2 : 3 : 4

B.  6 : 7 : 8

C.  6 : 8 : 9

D.  None of these

In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quanity of water to be further added is:

A.  20 litres

B.  40 litres

C.  60 litres

D.  80 litres

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?

A.  8 : 9

B.  17 : 18

C.  21 : 22

D.  Cannot be determined

Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 : 57. What is Sumit's salary?

A.  Rs. 17,000

B.  Rs. 20,000

C.  Rs. 25,500

D.  Rs. 38,000

The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:

A.  20

B.  30

C.  40

D.  50

If Rs. 782 be divided into three parts, proportional to 1/2 : 2/3 : 3/4 then the first part is:

A.  Rs. 182

B.  Rs. 190

C.  Rs. 196

D.  Rs. 204

The salaries A, B, C are in the ratio 2 : 3 : 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be new ratio of their salaries?

A.  3 : 3 : 10

B.  10 : 11 : 20

C.  23 : 33 : 60

D.  Cannot be determined

If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?

A.  2 : 5

B.  3 : 7

C.  5 : 3

D.  7 : 3

The fourth proportional to 5, 8, 15 is:

A.  16

B.  20

C.  24

D.  28

Two number are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is:

A.  27

B.  30

C.  33

D.  36

In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?

A.  50

B.  100

C.  150

D.  200

Which of the following fractions is the smallest?

A.  13/16

B.  15/19

C.  17/21

D.  7/8

If A : B =8 : 15, B : C = 5 : 8 and C : D = 4 : 5, then A : D is equal to:

A.  2 : 7

B.  4 : 15

C.  8 : 15

D.  15 : 4

Hitesh is 40 years old and Ronnie is 60 years old. How many years ago was the ratio of their ages 3 : 5 ?

A.  5 years

B.  10 years

C.  20 years

D.  37 years

Girish started a business investing Rs. 45,000. After 3 months, Vijay joined him with a capital of Rs. 60,000. After another 6 months, Ankush joined them with a capital of Rs. 90,000. At the end of the year, they made a profit of Rs. 16,500. What is Girish’s share of profit ?

A.  Rs. 5,500

B.  Rs. 6,000

C.  Rs. 6,600

D.  As. 5,900

E.  None of these

If a/3 = b/4 = c/7, then a + b + c /c is equal to:

A.  7

B.  2

C.  1/2

D.  1/7

Two whole numbers whose sum is 72 cannot be in the ratio:

A.  5 : 7

B.  3 : 5

C.  3 : 4

D.  4 : 5

If 15% of x = 20% of y, then x : y is:

A.  3 :4

B.  4 : 3

C.  17 :16

D.  16 : 17

If A : B =8 : 15, B : C = 5 : 8 and C : D = 4 : 5, then A : D is equal to:

A.  2 : 7

B.  4 : 15

C.  8 : 15

D.  15 : 4

337.62 + 8.591 + 34.4 =?

A.  370.611

B.  380.511

C.  380.611

D.  426.97

The ratio between the whole expenses on taxes for every year and the entire expenses on fuel and transports for every year is around

A.  8:56

B.  4:12

C.  3:78

D.  10:13

E.  5:78

Which of the following fractions is less than 7/8 and greater than 1/3?

A.  1/4

B.  23/24

C.  11/12

D.  17/24