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Quantitative Aptitude : Questions Answers : Ratio and Proportion



6.

The ratio of the cost of two books is 3:5. If the cost of first book is 4.80 rupee, then what is the cost of the second one?

A. Rs. 8

B. Rs. 9

C. Rs. 11

D. Rs. 5



7.

A box contains rupee, fifty paise and twenty five paise coins whose values are in the proportion of 2:3:4. if the total number of coins are 480 find the value of each coins and total amount in rupees.

A. 40, 60, 80 and 180

B. 40, 60, 90 and 150

C. 20, 40, 60, and 650

D. None of these.



8.

Ratio of earnings of Ram and Bimal is 8:9 respectively. if the earnings of Ram increased by 50% and the earnings of Bimal decrease by 25%; then the new ratio of their earnings becomes 16:9 respectively. What is the earning of Ram.

A. 450

B. 500

C. 700

D. Cannot be determined.



9.

The ratio of the present ages of priya aand her son is 5:2 respectively. Seven years hence, the ratio will be 2:1 . What was the age of priya when her son was born?

A. 20 years

B. 25 years

C. 23 years

D. 21 years



10.

Three fourth of a number is equal to 20% of another number. What is the ratio of the first number to the second number?

A. 3:10

B. 5:8

C. 4:15

D. 9:8