If a:b = 6:9 and b:c = 9:9, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 6:9 and b:c = 9:9, then a:b:c = ?

A. 5:9:10

B. 6:9:9

C. 12:18:18

D. 6:10:9

Answer: Option B

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 6:9, b:c = 9:9 ⇒ a:b:c = 6:9:9.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 8:7 and b:c = 7:6, then a:b:c = ?

A. 16:14:12

B. 8:7:6

C. 8:8:6

D. 7:7:7

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 8:7, b:c = 7:6 ⇒ a:b:c = 8:7:6.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 3:7 and b:c = 7:4, then a:b:c = ?

A. 3:8:4

B. 2:7:5

C. 3:7:4

D. 6:14:8

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:7, b:c = 7:4 ⇒ a:b:c = 3:7:4.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in the ratio 11:15 and their sum is 202. Find the numbers.

A. 99 and 94

B. 154 and 210

C. 61 and 114

D. 77 and 105

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Correct Answer: Option D

Explanation:
Numbers = 11k and 15k. 11k + 15k = 202 ⇒ k = 7. Thus, numbers are 77 and 105.

This question belongs to: Maths Ratio and Proportion

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