If a:b = 2:6 and b:c = 6:9, then a:b:c = ? MCQ with Answer and Explanation

If a:b = 2:6 and b:c = 6:9, then a:b:c = ?

A. 1:6:10

B. 2:7:9

C. 4:12:18

D. 2:6:9

Answer: Option D

Combine ratios: a:b = 2:6, b:c = 6:9 ⇒ a:b:c = 2:6:9.

This question belongs to: Maths Ratio and Proportion

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Question #1 Report Error

Two numbers are in the ratio 5:6 and their sum is 406. Find the numbers.

A. 196 and 203

B. 180 and 216

C. 160 and 225

D. 360 and 432

Correct Answer: Option B

Explanation:
Numbers = 5k and 6k. 5k + 6k = 406 ⇒ k = 36. Thus, numbers are 180 and 216.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

If a:b = 3:4 and b:c = 4:11, then a:b:c = ?

A. 3:4:11

B. 2:4:12

C. 6:8:22

D. 3:5:11

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 3:4, b:c = 4:11 ⇒ a:b:c = 3:4:11.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

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

A. 5:11:6

B. 4:10:7

C. 10:20:12

D. 5:10:6

Correct Answer: Option D

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

This question belongs to: Maths Ratio and Proportion