Ratio and Proportion Online Test 2

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Question : 1/20 20 : 00

If 15% of A = 20% of B, then A : B = ?

A. 3 : 4

B. 4 : 3

C. 17 : 16

D. 16 : 17

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

A. 3 : 4

B. 8 : 15

C. 15 : 8

D. 4 : 3

If (x + y) : (x − y) = 4 : 1, then (x² +y²) : (x² - y²) = ?

A. 25 : 9

B. 16 : 1

C. 8 : 17

D. 17 : 8

If x² + 4y² = 4xy, then x : y = ?

A. 2 : 1

B. 1 : 2

C. 1 : 1

D. 1 : 4

If 20% of (P + Q) = 50% of (P − Q), then P : Q = ?

A. 5 : 7

B. 7 : 5

C. 7 : 3

D. 7 : 8

The ratio of boys and girls in a school is 3 : 2. When 6 more girls join, this ratio becomes 6 : 5. How many boys are there in the school ?

A. 24

B. 30

C. 36

D. 42

If 32 students in a class are females and the ratio of female to male students is 16 : 9, then what percentage of the class is female ?

A. 32%

B. 36%

C. 56.25%

D. 64%

What should be subtracted from each of the numbers 54, 71, 75, 99 so that the remainders may be proportional ?

A. 1

B. 2

C. 3

D. 6

The ratio of two numbers is 3 : 4 and their sum is 420. The greater of the two numbers is :

A. 175

B. 200

C. 240

D. 315

If A exceeds B by 40% and B is less than C by 20%, then A : C = ?

A. 3 : 1

B. 3 : 2

C. 26 : 25

D. 28 : 25

The salary of A, B and C together amounts to Rs. 333. If they spend 80%, 85% and 75% of their respective incomes, their savings are as 7 : 6 : 9. The salary of B is :

A. Rs. 105

B. Rs. 108

C. Rs. 115

D. Rs. 120

Rs. 53 are divided among A, B and. C in such a way that A gets Rs. 7 more than what B gets and B gets Rs. 8 more than what C gets. The ratio of their shares is :

A. 16 : 9 : 18

B. 25 : 18 : 10

C. 18 : 25 : 10

D. 15 : 8 : 30

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

A. 20 litres

B. 30 litres

C. 40 litres

D. 60 litres

The cost of making an article is divided between materials, labour and overheads in the ratio of 3 : 4 : 1. If the materials cost Rs. 234, then the labour cost is :

A. Rs. 176

B. Rs. 312

C. Rs. 78

D. Rs. 390

The ratio of the ages of two students is 3 : 2. One is older than the other by 5 years. .What is the age of the younger student ?

A. 2 years

B. 5 years

C. 10 years

D. 15 years

Incomes of A, B and C are in the ratio 7 : 9 : 12 and their expenditures are in the ratio 8 : 9 : 15. If A's saving is 0.25% of his income, then the ratio of savings of A, B and C is :

A. 56 : 99 : 69

B. 99 : 56 : 69

C. 69 : 56 : 99

D. 99 : 69 : 56

If y varies directly as (x + 3) and y = 8 when x = 1. What is the value of y when x = 2 ?

A. 6

B. 10

C. 12

D. 16

Third proportional to 0.36 and 0.48 is :

A. 0.64

B. 0.1728

C. 0.72

D. None of these

The ratio of the rates of flow of water in pipes varies inversely as the square of the radius of the pipe. The ratio of the rates of flow in two pipes of diameters 2 cm and 4 cm is :

A. 1 : 2

B. 2 : 1

C. 1 : 8

D. 4 : 1

A bag contains Rs. 216 in the form of one-rupee, 50-paise and 25-paise coins in the ratio of 2 : 3 : 4. The number of 50-paise coins is :

A. 96

B. 114

C. 141

D. 144

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Ratio and Proportion Online Test 2

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