Two numbers are in ratio 7:12. Their difference is 120. What is their sum? MCQ with Answer and Explanation

Question

Share Report Error

Two numbers are in ratio 7:12. Their difference is 120. What is their sum?

A. 275

B. 593

C. 551

D. 658

Answer: Option C

Solution (By JKSSB Mock Tests)

Numbers 7k, 12k. Difference |7-12|k = 120 ⇒ k = 24. Sum = (7+12)k ≈ 551.

This question belongs to: Maths Ratio and Proportion

Request complete Subject PDF

Discuss this Question (0)

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

Practice More Ratio and Proportion Questions

Question #1

Share Report

Ratio of present ages of A and B is 3:6. After 8 years, the ratio becomes 5:8. Present age of A is?

A. 69 years

B. 66 years

C. 138 years

D. 74 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Let ages 3k and 6k. Then (3k + 8)/(6k + 8) = 5/8. Solving gives k ≈ 23, age of A = 3*23 = 69.

This question belongs to: Maths Ratio and Proportion

Question #2

Share Report

If a:b = 7:6 and b:c = 6:7, then a:b:c = ?

A. 6:6:8

B. 14:12:14

C. 7:6:7

D. 7:7:7

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:6, b:c = 6:7 ⇒ a:b:c = 7:6:7.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

Ratio of present ages of A and B is 7:8. After 12 years, the ratio becomes 8:9. Present age of A is?

A. 70 years

B. 77 years

C. 154 years

D. 82 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Let ages 7k and 8k. Then (7k + 12)/(8k + 12) = 8/9. Solving gives k ≈ 11, age of A = 7*11 = 77.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs