If a:b = 6:6 and b:c = 6:7, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:6 and b:c = 6:7, then a:b:c = ?

A. 6:6:7

B. 5:6:8

C. 12:12:14

D. 6:7:7

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 6:6, b:c = 6:7 ⇒ a:b:c = 6:6:7.

This question belongs to: Maths Ratio and Proportion

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Question #1

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Two numbers are in ratio 7:11. Their difference is 125. What is their sum?

A. 345

B. 153

C. 389

D. 306

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Correct Answer: Option D

Explanation:
Numbers 7k, 11k. Difference |7-11|k = 125 ⇒ k = 31. Sum = (7+11)k ≈ 306.

This question belongs to: Maths Ratio and Proportion

Question #2

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If a:b = 7:7 and b:c = 7:6, then a:b:c = ?

A. 14:14:12

B. 7:8:6

C. 6:7:7

D. 7:7:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 7:7, b:c = 7:6 ⇒ a:b:c = 7:7:6.

This question belongs to: Maths Ratio and Proportion

Question #3

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If a:b = 7:10 and b:c = 10:11, then a:b:c = ?

A. 6:10:12

B. 7:11:11

C. 7:10:11

D. 14:20:22

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:10, b:c = 10:11 ⇒ a:b:c = 7:10:11.

This question belongs to: Maths Ratio and Proportion

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