If a:b = 5:10 and b:c = 10:4, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 5:10 and b:c = 10:4, then a:b:c = ?

A. 4:10:5

B. 5:11:4

C. 10:20:8

D. 5:10:4

Answer: Option D

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 5:10, b:c = 10:4 ⇒ a:b:c = 5:10:4.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 7:8 and b:c = 8:7, then a:b:c = ?

A. 6:8:8

B. 7:9:7

C. 7:8:7

D. 14:16:14

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:8, b:c = 8:7 ⇒ a:b:c = 7:8:7.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 2:8 and b:c = 8:4, then a:b:c = ?

A. 4:16:8

B. 2:9:4

C. 1:8:5

D. 2:8:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 2:8, b:c = 8:4 ⇒ a:b:c = 2:8:4.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 5:8 and b:c = 8:9, then a:b:c = ?

A. 10:16:18

B. 4:8:10

C. 5:9:9

D. 5:8:9

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:9 ⇒ a:b:c = 5:8:9.

This question belongs to: Maths Ratio and Proportion

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