If a:b = 3:8 and b:c = 8:10, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 3:8 and b:c = 8:10, then a:b:c = ?

A. 2:8:11

B. 3:9:10

C. 3:8:10

D. 6:16:20

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 3:8, b:c = 8:10 ⇒ a:b:c = 3:8:10.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 6:5 and b:c = 5:11, then a:b:c = ?

A. 6:5:11

B. 5:5:12

C. 6:6:11

D. 12:10:22

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 6:5, b:c = 5:11 ⇒ a:b:c = 6:5:11.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 4:5 and b:c = 5:11, then a:b:c = ?

A. 4:6:11

B. 8:10:22

C. 4:5:11

D. 3:5:12

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:11 ⇒ a:b:c = 4:5:11.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 3:7 and b:c = 7:4, then a:b:c = ?

A. 6:14:8

B. 3:8:4

C. 2:7:5

D. 3:7:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 3:7, b:c = 7:4 ⇒ a:b:c = 3:7:4.

This question belongs to: Maths Ratio and Proportion

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