If a:b = 3:3 and b:c = 3:5, then a:b:c = ? MCQ with Answer and Explanation
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Question #1
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If a:b = 3:9 and b:c = 9:10, then a:b:c = ?
Correct Answer: Option C
Explanation:
Combine ratios: a:b = 3:9, b:c = 9:10 ⇒ a:b:c = 3:9:10.
Combine ratios: a:b = 3:9, b:c = 9:10 ⇒ a:b:c = 3:9:10.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Two numbers are in ratio 7:4. Their difference is 143. What is their sum?
Correct Answer: Option B
Explanation:
Numbers 7k, 4k. Difference |7-4|k = 143 ⇒ k = 47. Sum = (7+4)k ≈ 264.
Numbers 7k, 4k. Difference |7-4|k = 143 ⇒ k = 47. Sum = (7+4)k ≈ 264.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Milk and water are in ratio 9:5 in a 204 L mixture. Quantity of milk?
Correct Answer: Option A
Explanation:
Total parts = 14. Milk = [9 / (9+5)] × 204 = 131 L.
Total parts = 14. Milk = [9 / (9+5)] × 204 = 131 L.
This question belongs to:
Maths
Ratio and Proportion
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