If a:b = 7:7 and b:c = 7:4, then a:b:c = ? MCQ with Answer and Explanation

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

A. 6:7:5

B. 7:8:4

C. 14:14:8

D. 7:7:4

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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. 8:8:6

B. 8:7:6

C. 16:14:12

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

Two numbers are in the ratio 3:14 and their sum is 614. Find the numbers.

A. 108 and 504

B. 118 and 488

C. 216 and 1008

D. 99 and 524

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Correct Answer: Option A

Explanation:
Numbers = 3k and 14k. 3k + 14k = 614 ⇒ k = 36. Thus, numbers are 108 and 504.

This question belongs to: Maths Ratio and Proportion

Question #3

Milk and water are in ratio 4:6 in a 273 L mixture. Quantity of milk?

A. 218 L

B. 109 L

C. 164 L

D. 133 L

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Correct Answer: Option B

Explanation:
Total parts = 10. Milk = [4 / (4+6)] × 273 = 109 L.

This question belongs to: Maths Ratio and Proportion

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