If a:b = 3:3 and b:c = 3:5, then a:b:c = ? MCQ with Answer and Explanation

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

A. 2:3:6

B. 3:3:5

C. 3:4:5

D. 6:6:10

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

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

A. 12:8:12

B. 6:5:6

C. 5:4:7

D. 6:4:6

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Correct Answer: Option D

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

This question belongs to: Maths Ratio and Proportion

Question #2

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

A. 3:3:7

B. 6:6:14

C. 2:3:8

D. 3:4:7

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Correct Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in ratio 7:4. Their difference is 143. What is their sum?

A. 132

B. 372

C. 290

D. 264

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Correct Answer: Option D

Explanation:
Numbers 7k, 4k. Difference |7-4|k = 143 ⇒ k = 47. Sum = (7+4)k ≈ 264.

This question belongs to: Maths Ratio and Proportion

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