Milk and water are in ratio 8:2 in a 253 L mixture. Quantity of milk? MCQ with Answer and Explanation
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Question #1
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Find the mean proportional between 7 and 28.
Correct Answer: Option B
Explanation:
Mean proportional = √(7 × 28) = √(196) = 14.
Mean proportional = √(7 × 28) = √(196) = 14.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Milk and water are in ratio 5:7 in a 456 L mixture. Quantity of milk?
Correct Answer: Option C
Explanation:
Total parts = 12. Milk = [5 / (5+7)] × 456 = 190 L.
Total parts = 12. Milk = [5 / (5+7)] × 456 = 190 L.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Ratio of present ages of A and B is 4:6. After 10 years, the ratio becomes 7:8. Present age of A is?
Correct Answer: Option D
Explanation:
Let ages 4k and 6k. Then (4k + 10)/(6k + 10) = 7/8. Solving gives k ≈ 8, age of A = 4*8 = 32.
Let ages 4k and 6k. Then (4k + 10)/(6k + 10) = 7/8. Solving gives k ≈ 8, age of A = 4*8 = 32.
This question belongs to:
Maths
Ratio and Proportion
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