Milk and water are in ratio 4:2 in a 505 L mixture. Quantity of milk? MCQ with Answer and Explanation

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Milk and water are in ratio 4:2 in a 505 L mixture. Quantity of milk?

A. 672 L

B. 169 L

C. 383 L

D. 336 L

Answer: Option D

Solution (By JKSSB Mock Tests)

Total parts = 6. Milk = [4 / (4+2)] × 505 = 336 L.

This question belongs to: Maths Ratio and Proportion

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Question #1

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Ratio of present ages of A and B is 6:7. After 6 years, the ratio becomes 7:8. Present age of A is?

A. 54 years

B. 59 years

C. 47 years

D. 108 years

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Correct Answer: Option A

Explanation:
Let ages 6k and 7k. Then (6k + 6)/(7k + 6) = 7/8. Solving gives k ≈ 9, age of A = 6*9 = 54.

This question belongs to: Maths Ratio and Proportion

Question #2

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Ratio of present ages of A and B is 7:5. After 12 years, the ratio becomes 8:8. Present age of A is?

A. 196 years

B. 98 years

C. 94 years

D. 103 years

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Correct Answer: Option B

Explanation:
Let ages 7k and 5k. Then (7k + 12)/(5k + 12) = 8/8. Solving gives k ≈ 14, age of A = 7*14 = 98.

This question belongs to: Maths Ratio and Proportion

Question #3

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If a:b = 7:6 and b:c = 6:7, then a:b:c = ?

A. 7:7:7

B. 6:6:8

C. 7:6:7

D. 14:12:14

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:6, b:c = 6:7 ⇒ a:b:c = 7:6:7.

This question belongs to: Maths Ratio and Proportion

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