If a:b = 8:6 and b:c = 6:12, then a:b:c = ? MCQ with Answer and Explanation

If a:b = 8:6 and b:c = 6:12, then a:b:c = ?

A. 16:12:24

B. 7:6:13

C. 8:7:12

D. 8:6:12

Answer: Option D

Combine ratios: a:b = 8:6, b:c = 6:12 ⇒ a:b:c = 8:6:12.

This question belongs to: Maths Ratio and Proportion

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Question #1 Report Error

Two numbers are in the ratio 4:5 and their sum is 398. Find the numbers.

A. 190 and 207

B. 176 and 220

C. 157 and 225

D. 352 and 440

Correct Answer: Option B

Explanation:
Numbers = 4k and 5k. 4k + 5k = 398 ⇒ k = 44. Thus, numbers are 176 and 220.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

If a:b = 5:5 and b:c = 5:9, then a:b:c = ?

A. 4:5:10

B. 5:5:9

C. 5:6:9

D. 10:10:18

Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:5, b:c = 5:9 ⇒ a:b:c = 5:5:9.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

If a:b = 4:5 and b:c = 5:9, then a:b:c = ?

A. 4:5:9

B. 4:6:9

C. 8:10:18

D. 3:5:10

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:9 ⇒ a:b:c = 4:5:9.

This question belongs to: Maths Ratio and Proportion