If a:b = 8:9 and b:c = 9:8, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 8:9 and b:c = 9:8, then a:b:c = ?

A. 8:9:8

B. 7:9:9

C. 8:10:8

D. 16:18:16

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:9, b:c = 9:8 ⇒ a:b:c = 8:9:8.

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 4:5. After 4 years, the ratio becomes 6:7. Present age of A is?

A. 60 years

B. 55 years

C. 120 years

D. 65 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Let ages 4k and 5k. Then (4k + 4)/(5k + 4) = 6/7. Solving gives k ≈ 15, age of A = 4*15 = 60.

This question belongs to: Maths Ratio and Proportion

Question #2

Share Report

Ratio of present ages of A and B is 3:8. After 10 years, the ratio becomes 4:10. Present age of A is?

A. 44 years

B. 102 years

C. 51 years

D. 56 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Let ages 3k and 8k. Then (3k + 10)/(8k + 10) = 4/10. Solving gives k ≈ 17, age of A = 3*17 = 51.

This question belongs to: Maths Ratio and Proportion

Question #3

Share Report

Ratio of present ages of A and B is 5:6. After 9 years, the ratio becomes 7:7. Present age of A is?

A. 95 years

B. 100 years

C. 200 years

D. 105 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Let ages 5k and 6k. Then (5k + 9)/(6k + 9) = 7/7. Solving gives k ≈ 20, age of A = 5*20 = 100.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs