If a:b = 8:5 and b:c = 5:6, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 8:5 and b:c = 5:6, then a:b:c = ?

A. 8:6:6

B. 8:5:6

C. 16:10:12

D. 7:5:7

Answer: Option B

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:5, b:c = 5:6 ⇒ a:b:c = 8:5:6.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 2:4 and b:c = 4:7, then a:b:c = ?

A. 4:8:14

B. 1:4:8

C. 2:4:7

D. 2:5:7

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 2:4, b:c = 4:7 ⇒ a:b:c = 2:4:7.

This question belongs to: Maths Ratio and Proportion

Question #2

Two numbers are in ratio 8:12. Their difference is 61. What is their sum?

A. 320

B. 160

C. 452

D. 357

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Correct Answer: Option A

Explanation:
Numbers 8k, 12k. Difference |8-12|k = 61 ⇒ k = 15. Sum = (8+12)k ≈ 320.

This question belongs to: Maths Ratio and Proportion

Question #3

Find the mean proportional between 33 and 15.

A. 48

B. 25

C. 44

D. 22

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Correct Answer: Option D

Explanation:
Mean proportional = √(33 × 15) = √(495) = 22.

This question belongs to: Maths Ratio and Proportion

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