Milk and water are in ratio 9:3 in a 408 L mixture. Quantity of milk? MCQ with Answer and Explanation
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Question #1
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Two numbers are in ratio 7:11. Their difference is 125. What is their sum?
Correct Answer: Option A
Explanation:
Numbers 7k, 11k. Difference |7-11|k = 125 ⇒ k = 31. Sum = (7+11)k ≈ 306.
Numbers 7k, 11k. Difference |7-11|k = 125 ⇒ k = 31. Sum = (7+11)k ≈ 306.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Ratio of present ages of A and B is 3:6. After 8 years, the ratio becomes 5:8. Present age of A is?
Correct Answer: Option A
Explanation:
Let ages 3k and 6k. Then (3k + 8)/(6k + 8) = 5/8. Solving gives k ≈ 23, age of A = 3*23 = 69.
Let ages 3k and 6k. Then (3k + 8)/(6k + 8) = 5/8. Solving gives k ≈ 23, age of A = 3*23 = 69.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 4:3 and b:c = 3:7, then a:b:c = ?
Correct Answer: Option B
Explanation:
Combine ratios: a:b = 4:3, b:c = 3:7 ⇒ a:b:c = 4:3:7.
Combine ratios: a:b = 4:3, b:c = 3:7 ⇒ a:b:c = 4:3:7.
This question belongs to:
Maths
Ratio and Proportion
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