If a:b = 5:9 and b:c = 9:11, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 5:9 and b:c = 9:11, then a:b:c = ?

A. 5:10:11

B. 10:18:22

C. 5:9:11

D. 4:9:12

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 5:9, b:c = 9:11 ⇒ a:b:c = 5:9:11.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 4:5 and b:c = 5:6, then a:b:c = ?

A. 4:6:6

B. 4:5:6

C. 8:10:12

D. 3:5:7

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:6 ⇒ a:b:c = 4:5:6.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 6:10 and b:c = 10:4, then a:b:c = ?

A. 6:11:4

B. 5:10:5

C. 12:20:8

D. 6:10:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 6:10, b:c = 10:4 ⇒ a:b:c = 6:10:4.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 4:9 and b:c = 9:10, then a:b:c = ?

A. 4:9:10

B. 8:18:20

C. 3:9:11

D. 4:10:10

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:9, b:c = 9:10 ⇒ a:b:c = 4:9:10.

This question belongs to: Maths Ratio and Proportion

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