If a:b = 2:4 and b:c = 4:10, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 2:4 and b:c = 4:10, then a:b:c = ?

A. 2:5:10

B. 2:4:10

C. 1:4:11

D. 4:8:20

Answer: Option B

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 2:4, b:c = 4:10 ⇒ a:b:c = 2:4:10.

This question belongs to: Maths Ratio and Proportion

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Question #1

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

A. 5:5:5

B. 4:5:6

C. 5:6:5

D. 10:10:10

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

Question #2

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

A. 3:10:8

B. 2:10:9

C. 3:11:8

D. 6:20:16

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 5:6:8

B. 4:5:9

C. 5:5:8

D. 10:10:16

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Correct Answer: Option C

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

This question belongs to: Maths Ratio and Proportion

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