Milk and water are in ratio 4:7 in a 249 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 35.
Correct Answer: Option D
Explanation:
Mean proportional = √(7 × 35) = √(245) = 15.
Mean proportional = √(7 × 35) = √(245) = 15.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Two numbers are in the ratio 13:11 and their sum is 287. Find the numbers.
Correct Answer: Option B
Explanation:
Numbers = 13k and 11k. 13k + 11k = 287 ⇒ k = 11. Thus, numbers are 143 and 121.
Numbers = 13k and 11k. 13k + 11k = 287 ⇒ k = 11. Thus, numbers are 143 and 121.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 5:7 and b:c = 7:5, then a:b:c = ?
Correct Answer: Option D
Explanation:
Combine ratios: a:b = 5:7, b:c = 7:5 ⇒ a:b:c = 5:7:5.
Combine ratios: a:b = 5:7, b:c = 7:5 ⇒ a:b:c = 5:7:5.
This question belongs to:
Maths
Ratio and Proportion
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