Ratio and Proportion Online Test 3

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Question : 1/20 20 : 00

If A : B = 5 : 7 and B : C = 6 : 11, then A : B : C = ?

A. 55 : 77 : 66

B. 30 : 42 : 77

C. 35 : 49 : 42

D. None of these

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

A. 2 : 3 : 4

B. 4 : 3 : 2

C. 6 : 4 : 3

D. 3 : 4 : 6

If x5 = y8, then (x + 5) : (y + 8) = ?

A. 3 : 5

B. 13 : 8

C. 8 : 5

D. 5 : 8

If 0.4 : 1.4 :: 1.4 : x, then x = ?

A. 49

B. 4.9

C. 0.49

D. 0.4

If a : b = c : d = e : f = 1 : 2, then (3a + 5c + 7e) : (3b + 5d + 7f) = ?

A. 1 : 2

B. 1 : 4

C. 2 : 1

D. 8 : 7

In a school, the ratio of boys and girls is 4 : 5. When 100 girls leave the school, the ratio becomes 6 : 7. How many boys are there in the school ?

A. 1200

B. 1300

C. 1500

D. 1600

In a class, the number of girls is 20% more than that of the boys. The strength of the class is 66. If 4 more girls are admitted to the class, what will be the ratio of the number of boys to that of the girls ?

A. 1 : 2

B. 1 : 4

C. 3 : 4

D. 3 : 5

Two numbers are respectively 20% and 50%, more than a third number. These two numbers are in the ratio :

A. 2 : 5

B. 4 : 5

C. 3 : 2

D. 5 : 2

When 20% of a number is added to another number, the number increases by 50%. What is the ratio between the first and the second number ?

A. 3 : 2

B. 2 : 3

C. 5 : 2

D. None of these

Three numbers A, B and C are in the ratio 1 : 2 : 3. Their average is 600. If A is increased by 10% and B is decreased by 20%, then to get the average increased by 5%, C will be increased by :

A. 90

B. 100

C. 150

D. 180

The incomes of A and B are in the ratio 3 : 2 and their expenditures are in the ratio 5 : 3. If each saves Rs. 1000, then A's income is :

A. Rs. 3000

B. Rs. 4000

C. Rs. 6000

D. Rs. 9000

Rs. 3068 are distributed among A, B and C such that on decreasing their shares by Rs. 10, Rs. 14 and Rs. 20 respectively, the balance money would be divided among them in the ratio 5 : 6 : 7. Then, B's share is :

A. Rs. 864

B. Rs. 1022

C. Rs. 2014

D. Rs. 1064

20 litres of a mixture contains milk and water in the ratio 5 : 3. If 4 litres of this mixture is replaced by 4 litres of milk, then the ratio of milk and water in the new mixture is :

A. 2 : 3

B. 4 : 3

C. 5 : 3

D. 7 : 3

Gold is 19 times as heavy as water and copper 9 times as heavy as water. The ratio in which these two metals be mixed so that the mixture is 15 times as heavy as water, is :

A. 1 : 2

B. 2 : 3

C. 3 : 2

D. 19 : 135

The ratio between the ages of Kamla and Nisha is 6 : 5 and the sum of their ages is 44 years. The ratio of their ages after 8 years will be :

A. 5 : 6

B. 7 : 8

C. 8 : 7

D. 14 : 13

Rs. 1050 are divided among P, Q and R in such a way that the share of P is 25 of the combined share of Q and R. Thus, P gets :

A. Rs. 200

B. Rs. 300

C. Rs. 320

D. Rs. 420

If x² varies directly as y³ and when x = 6, y = 3, then which of the following relations is true ?

A. 3x² = 4y³

B. 3x² = 2y³

C. y² = 2x³

D. y³ = 2x²

Mean proportional to 0.32 and 0.02 is :

A. 0.8

B. 0.08

C. 0.008

D. 0.4

A mixture contains spirit and water in the ratio 3 : 2. If it contains 3 litres more spirit than water, then the quantity of spirit in the mixture is :

A. 8 litres

B. 9 litres

C. 10 litres

D. 12 litres

A bag contains Rs. 20, Rs. 10 and Rs. 5 notes in the ratio 1 : 2 : 4. If their total value is Rs. 3000, then the number of Rs. 5 notes is :

A. 50

B. 100

C. 150

D. 200

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Ratio and Proportion Online Test 3

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