If a:b = 4:10 and b:c = 10:5, then a:b:c = ? MCQ with Answer and Explanation

If a:b = 4:10 and b:c = 10:5, then a:b:c = ?

A. 4:10:5

B. 4:11:5

C. 8:20:10

D. 3:10:6

Answer: Option A

Combine ratios: a:b = 4:10, b:c = 10:5 ⇒ a:b:c = 4:10:5.

This question belongs to: Maths Ratio and Proportion

No comments yet. Be the first to start the discussion!

Question #1 Report Error

Two numbers are in the ratio 7:4 and their sum is 257. Find the numbers.

A. 161 and 92

B. 143 and 110

C. 176 and 65

D. 322 and 184

Correct Answer: Option A

Explanation:
Numbers = 7k and 4k. 7k + 4k = 257 ⇒ k = 23. Thus, numbers are 161 and 92.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

Milk and water are in ratio 7:2 in a 578 L mixture. Quantity of milk?

A. 898 L

B. 129 L

C. 449 L

D. 473 L

Correct Answer: Option C

Explanation:
Total parts = 9. Milk = [7 / (7+2)] × 578 = 449 L.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

Two numbers are in the ratio 8:14 and their sum is 276. Find the numbers.

A. 84 and 185

B. 96 and 168

C. 125 and 139

D. 192 and 336

Correct Answer: Option B

Explanation:
Numbers = 8k and 14k. 8k + 14k = 276 ⇒ k = 12. Thus, numbers are 96 and 168.

This question belongs to: Maths Ratio and Proportion