Ratio and Proportion Online Test 4

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Question : 1/20 20 : 00

If A : B = 2 : 3 and B : C=4 : 5, then C : A = ?

A. 15 : 8

B. 6 : 5

C. 8 : 5

D. 8 : 15

If 0.6 x A = 0.09 x B, then A : B = ?

A. 2 : 3

B. 1 : 15

C. 20 : 3

D. 3 : 20

4^3.5 : 2⁵= ?

A. 4 : 1

B. 2 : 1

C. 7 : 5

D. 7 : 10

If 7 : x :: 17.5 : 22.5, then x = ?

A. 5.5

B. 7.5

C. 6

D. 9

If a : b = b : c, then (a⁴ : b⁴) = ?

A. b² : ac

B. c² : a² :

C. a² : c² :

D. ac : b²

The ratio of the number of students studying in schools A, B and C is 5 : 6 : 8. If the number of students in each of the schools is increased by 30%, 25% and 25% respectively, what will be the new ratio of the students in schools A, B and C ?

A. 14 : 15 : 20

B. 13 : 15 : 20

C. 13 : 14 : 15

D. 15 : 17 : 19

Two numbers are in the ratio of 3 : 5. If each number is increased by 10, the ratio becomes 5 : 7. The numbers are :

A. 3, 5

B. 7, 9

C. 13, 22

D. 15, 25

If a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broken mirrors to unbroken mirrors ?

A. 2 : 1

B. 3 : 1

C. 3 : 2

D. 7 : 5

Which of the following is the lowest ratio ?

A. 7 : 13

B. 17 : 25

C. 7 : 15

D. 15 : 23

When 1 is added to each of the given two numbers, their ratio becomes 3 : 4 and when 5 is subtracted from each, the ratio becomes 7 : 10. The numbers are :

A. 8, 11

B. 11, 15

C. 26, 35

D. 27, 36

The ratio of incomes of A and B is 5 : 3 and that of their expenditures is 9 : 5. If they save Rs. 2600 and Rs. 1800 respectively, then their incomes are :

A. Rs. 9000, Rs. 5400

B. Rs. 10000, Rs. 6000

C. Rs. 6000, Rs. 3600

D. Rs. 8000, Rs. 4800

A mixture contains milk and water in the ratio 5 : 1. On adding 5 litres of water, the ratio of milk to water becomes 5 : 2. The quantity of milk in the original mixture is :

A. 16 litres

B. 22.75 litres

C. 25 litres

D. 32.5 litres

A and B are two alloys of gold and copper prepared by mixing metals in the proportion 7 : 2 and 7 : 11 respectively. If equal quantities of the alloy are melted to form a third alloy C, the proportion of gold and copper in C will be :

A. 5 : 9

B. 5 : 7

C. 7 : 5

D. 9 : 5

A man had some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens is :

A. 22

B. 23

C. 24

D. 26

The ratio of a man's age to his son's age is 4 : 1. The product of their ages is 196. The ratio of their ages after 5 years will be :

A. 3 : 1

B. 10 : 3

C. 11 : 4

D. 14 : 5

Three equal glasses are filled with mixtures of spirit and water. The ratio of spirit and water is given below :
1st glass = 3 : 4, 2nd glass = 4 : 5 and 3rd glass = 5 : 6
The contents of three glasses are emptied into a single vessel. What is the ratio of spirit to water in the mixture now ?

A. 820 : 1149

B. 920 : 1159

C. 1010 : 1122

D. 1120 : 1134

If 0.75 : x :: 5 : 8, then x = ?

A. 1.12

B. 1.2

C. 1.25

D. 1.3

The mean proportional of 234 and 104 is :

A. 12

B. 39

C. 54

D. None of these

A right cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is :

A. 3 : 5

B. 2 : 5

C. 3 : 1

D. 1 : 3

If the angles of a triangle are in the ratio 3 : 4 : 5, then the largest angle is :

A. 50°

B. 75°

C. 90°

D. 120°

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Ratio and Proportion Online Test 4

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