If a:b = 3:6 and b:c = 6:12, then a:b:c = ? MCQ with Answer and Explanation

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

A. 3:6:12

B. 6:12:24

C. 2:6:13

D. 3:7:12

Answer: Option A

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

This question belongs to: Maths Ratio and Proportion

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Question #1 Report Error

Two numbers are in the ratio 5:3 and their sum is 590. Find the numbers.

A. 389 and 195

B. 730 and 438

C. 348 and 236

D. 365 and 219

Correct Answer: Option D

Explanation:
Numbers = 5k and 3k. 5k + 3k = 590 ⇒ k = 73. Thus, numbers are 365 and 219.

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. 2:4:12

B. 3:4:11

C. 3:5:11

D. 6:8:22

Correct Answer: Option B

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 = 8:5 and b:c = 5:4, then a:b:c = ?

A. 7:5:5

B. 8:6:4

C. 16:10:8

D. 8:5:4

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 8:5, b:c = 5:4 ⇒ a:b:c = 8:5:4.

This question belongs to: Maths Ratio and Proportion