If a:b = 8:4 and b:c = 4:6, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 8:4 and b:c = 4:6, then a:b:c = ?

A. 7:4:7

B. 16:8:12

C. 8:5:6

D. 8:4:6

Answer: Option D

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:4, b:c = 4:6 ⇒ a:b:c = 8:4:6.

This question belongs to: Maths Ratio and Proportion

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Question #1

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

A. 3:4:7

B. 8:8:12

C. 4:4:6

D. 4:5:6

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Correct Answer: Option C

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

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 6:3 and b:c = 3:12, then a:b:c = ?

A. 6:3:12

B. 6:4:12

C. 12:6:24

D. 5:3:13

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 6:3, b:c = 3:12 ⇒ a:b:c = 6:3:12.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in ratio 7:12. Their difference is 101. What is their sum?

A. 152

B. 304

C. 423

D. 334

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Correct Answer: Option B

Explanation:
Numbers 7k, 12k. Difference |7-12|k = 101 ⇒ k = 20. Sum = (7+12)k ≈ 304.

This question belongs to: Maths Ratio and Proportion

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