The present ages of A and B are in the ratio 6:7. After 8 years, the ratio of their ages will be 8:9. Find the sum of their present ages. MCQ with Answer and Explanation

Question

The present ages of A and B are in the ratio 6:7. After 8 years, the ratio of their ages will be 8:9. Find the sum of their present ages.

A. 56 years

B. 52 years

C. 60 years

D. 48 years

Answer: Option B

Solution (By JKExamLibrary)

Ages 6x,7x. (6x+8)/(7x+8)=8/9 → 54x+72=56x+64 → 2x=8 → x=4. Sum=6x+7x=13x=52.

This question belongs to: Maths Percentage

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Percentage Questions

Question #1

Share Report

The price of petrol increases by 30%. By what percent should a person reduce consumption so that expenditure increases only by 10%?

A. 14.5%

B. 16.67%

C. 18%

D. 15.38%

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
1.3 × x = 1.1 → x = 1.1/1.3 ≈ 0.84615, reduction 15.38%.

This question belongs to: Maths Percentage

Question #2

Share Report

12% of a number is 96. The number is:

A. 700

B. 800

C. 900

D. 600

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
0.12x = 96 → x = 800.

This question belongs to: Maths Percentage

Question #3

Share Report

In a class of 50, 40% are girls. Number of boys is:

A. 28

B. 25

C. 32

D. 30

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
60% of 50 = 30 boys.

This question belongs to: Maths Percentage

Explore All Percentage MCQs