If a:b = 8:5 and b:c = 5:6, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 8:5 and b:c = 5:6, then a:b:c = ?

A. 16:10:12

B. 8:6:6

C. 7:5:7

D. 8:5:6

Answer: Option D

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:5, b:c = 5:6 ⇒ a:b:c = 8:5:6.

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

Find the mean proportional between 11 and 38.

A. 20

B. 49

C. 23

D. 40

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Mean proportional = √(11 × 38) = √(418) = 20.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 6:7 and b:c = 7:12, then a:b:c = ?

A. 5:7:13

B. 6:8:12

C. 12:14:24

D. 6:7:12

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 6:7, b:c = 7:12 ⇒ a:b:c = 6:7:12.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 3:5 and b:c = 5:9, then a:b:c = ?

A. 6:10:18

B. 3:6:9

C. 3:5:9

D. 2:5:10

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:5, b:c = 5:9 ⇒ a:b:c = 3:5:9.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs