If a:b = 6:9 and b:c = 9:6, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:9 and b:c = 9:6, then a:b:c = ?

A. 5:9:7

B. 12:18:12

C. 6:9:6

D. 6:10:6

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 6:9, b:c = 9:6 ⇒ a:b:c = 6:9:6.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

Find the mean proportional between 11 and 45.

A. 44

B. 25

C. 56

D. 22

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Correct Answer: Option D

Explanation:
Mean proportional = √(11 × 45) = √(495) = 22.

This question belongs to: Maths Ratio and Proportion

Question #2

Find the mean proportional between 22 and 16.

A. 21

B. 18

C. 36

D. 38

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Correct Answer: Option B

Explanation:
Mean proportional = √(22 × 16) = √(352) = 18.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in the ratio 13:6 and their sum is 485. Find the numbers.

A. 650 and 300

B. 342 and 131

C. 325 and 150

D. 306 and 158

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Correct Answer: Option C

Explanation:
Numbers = 13k and 6k. 13k + 6k = 485 ⇒ k = 25. Thus, numbers are 325 and 150.

This question belongs to: Maths Ratio and Proportion

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