If a:b = 6:4 and b:c = 4:6, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:4 and b:c = 4:6, then a:b:c = ?

A. 6:5:6

B. 6:4:6

C. 5:4:7

D. 12:8:12

Answer: Option B

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 6:4, b:c = 4:6 ⇒ a:b:c = 6:4:6.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 5:3 and b:c = 3:7, then a:b:c = ?

A. 4:3:8

B. 5:4:7

C. 5:3:7

D. 10:6:14

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 5:3, b:c = 3:7 ⇒ a:b:c = 5:3:7.

This question belongs to: Maths Ratio and Proportion

Question #2

Find the mean proportional between 4 and 66.

A. 19

B. 70

C. 32

D. 16

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Correct Answer: Option D

Explanation:
Mean proportional = √(4 × 66) = √(264) = 16.

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 7:8:6

B. 14:14:12

C. 6:7:7

D. 7:7:6

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Correct Answer: Option D

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

This question belongs to: Maths Ratio and Proportion

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