If a:b = 5:10 and b:c = 10:6, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 5:10 and b:c = 10:6, then a:b:c = ?

A. 5:10:6

B. 10:20:12

C. 5:11:6

D. 4:10:7

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 5:10, b:c = 10:6 ⇒ a:b:c = 5:10:6.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 8:3 and b:c = 3:6, then a:b:c = ?

A. 16:6:12

B. 7:3:7

C. 8:4:6

D. 8:3:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 8:3, b:c = 3:6 ⇒ a:b:c = 8:3:6.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 4:5 and b:c = 5:11, then a:b:c = ?

A. 4:5:11

B. 3:5:12

C. 8:10:22

D. 4:6:11

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:11 ⇒ a:b:c = 4:5:11.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in ratio 11:7. Their difference is 58. What is their sum?

A. 280

B. 252

C. 126

D. 350

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Correct Answer: Option B

Explanation:
Numbers 11k, 7k. Difference |11-7|k = 58 ⇒ k = 14. Sum = (11+7)k ≈ 252.

This question belongs to: Maths Ratio and Proportion

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