If a:b = 3:3 and b:c = 3:7, then a:b:c = ? MCQ with Answer and Explanation

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

A. 3:4:7

B. 2:3:8

C. 6:6:14

D. 3:3:7

Answer: Option D

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 3:3 and b:c = 3:12, then a:b:c = ?

A. 2:3:13

B. 3:3:12

C. 6:6:24

D. 3:4:12

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 3:3, b:c = 3:12 ⇒ a:b:c = 3:3:12.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 7:10 and b:c = 10:9, then a:b:c = ?

A. 6:10:10

B. 14:20:18

C. 7:10:9

D. 7:11:9

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:10, b:c = 10:9 ⇒ a:b:c = 7:10:9.

This question belongs to: Maths Ratio and Proportion

Question #3

Find the mean proportional between 26 and 77.

A. 103

B. 47

C. 88

D. 44

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Correct Answer: Option D

Explanation:
Mean proportional = √(26 × 77) = √(2002) = 44.

This question belongs to: Maths Ratio and Proportion

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