If a:b = 5:8 and b:c = 8:11, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 5:8 and b:c = 8:11, then a:b:c = ?

A. 10:16:22

B. 5:8:11

C. 4:8:12

D. 5:9:11

Answer: Option B

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 5:8, b:c = 8:11 ⇒ a:b:c = 5:8:11.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 3:4 and b:c = 4:5, then a:b:c = ?

A. 6:8:10

B. 3:4:5

C. 2:4:6

D. 3:5:5

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 3:4, b:c = 4:5 ⇒ a:b:c = 3:4:5.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 7:10 and b:c = 10:11, then a:b:c = ?

A. 14:20:22

B. 7:11:11

C. 6:10:12

D. 7:10:11

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 7:10, b:c = 10:11 ⇒ a:b:c = 7:10:11.

This question belongs to: Maths Ratio and Proportion

Question #3

Find the mean proportional between 14 and 77.

A. 32

B. 35

C. 64

D. 91

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Correct Answer: Option A

Explanation:
Mean proportional = √(14 × 77) = √(1078) = 32.

This question belongs to: Maths Ratio and Proportion

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