If A is 20% more than B, then B is what percentage less than A? MCQ with Answer and Explanation
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Question #1
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Two alloys have copper 60% and 35%. Mixed to get 50% copper. Ratio of mixing:
Correct Answer: Option D
Explanation:
Using alligation: (60-50):(50-35) = 10:15 = 2:3, but the first alloy gives 10% excess, second gives 15% deficit, so ratio 15:10 = 3:2.
Using alligation: (60-50):(50-35) = 10:15 = 2:3, but the first alloy gives 10% excess, second gives 15% deficit, so ratio 15:10 = 3:2.
This question belongs to:
Maths
Percentage
Question #2
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A man buys an article for Rs. 80 and marks it at Rs. 120. He gives a discount of 10% on the marked price. What is his profit percent?
Correct Answer: Option C
Explanation:
SP = 120×0.9=108. Profit = 28, % = (28/80)×100 = 35%.
SP = 120×0.9=108. Profit = 28, % = (28/80)×100 = 35%.
This question belongs to:
Maths
Percentage
Question #3
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A's salary increased by 25% then decreased by 25%. Original salary 8000, final salary:
Correct Answer: Option B
Explanation:
8000 × 1.25 × 0.75 = 8000 × 0.9375 = 7500.
8000 × 1.25 × 0.75 = 8000 × 0.9375 = 7500.
This question belongs to:
Maths
Percentage
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