If a:b = 7:6 and b:c = 6:7, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 7:6 and b:c = 6:7, then a:b:c = ?

A. 14:12:14

B. 7:6:7

C. 6:6:8

D. 7:7:7

Answer: Option B

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 7:6, b:c = 6:7 ⇒ a:b:c = 7:6:7.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 7:6 and b:c = 6:5, then a:b:c = ?

A. 14:12:10

B. 7:7:5

C. 6:6:6

D. 7:6:5

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 7:6, b:c = 6:5 ⇒ a:b:c = 7:6:5.

This question belongs to: Maths Ratio and Proportion

Question #2

Find the mean proportional between 7 and 35.

A. 42

B. 30

C. 15

D. 18

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Correct Answer: Option C

Explanation:
Mean proportional = √(7 × 35) = √(245) = 15.

This question belongs to: Maths Ratio and Proportion

Question #3

Find the mean proportional between 7 and 9.

A. 16

B. 10

C. 7

D. 14

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Correct Answer: Option C

Explanation:
Mean proportional = √(7 × 9) = √(63) = 7.

This question belongs to: Maths Ratio and Proportion

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