A number is 20% less than another number. If the smaller number is 120, the larger number is: MCQ with Answer and Explanation
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Question #1
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A sum of money at simple interest amounts to Rs. 850 in 3 years and to Rs. 925 in 4 years. Find the principal.
Correct Answer: Option D
Explanation:
SI for 1 year = 925-850 = 75. For 3 years SI = 225, principal = 850-225=625.
SI for 1 year = 925-850 = 75. For 3 years SI = 225, principal = 850-225=625.
This question belongs to:
Maths
Percentage
Question #2
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A man buys 10 articles for Rs. 8 and sells 8 articles for Rs. 10. Find his profit percent.
Correct Answer: Option C
Explanation:
CP of 1 article = 8/10 = 0.8, SP of 1 = 10/8 = 1.25. Profit = 0.45, % = (0.45/0.8)×100 = 56.25%.
CP of 1 article = 8/10 = 0.8, SP of 1 = 10/8 = 1.25. Profit = 0.45, % = (0.45/0.8)×100 = 56.25%.
This question belongs to:
Maths
Percentage
Question #3
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If the selling price of an article is doubled, the profit triples. Find the original profit percent.
Correct Answer: Option B
Explanation:
Let CP = C, SP = S, profit = S - C. New SP = 2S, new profit = 3(S-C) = 2S - C. So 3S - 3C = 2S - C → S = 2C. Profit% = (S-C)/C × 100 = (2C-C)/C × 100 = 100%.
Let CP = C, SP = S, profit = S - C. New SP = 2S, new profit = 3(S-C) = 2S - C. So 3S - 3C = 2S - C → S = 2C. Profit% = (S-C)/C × 100 = (2C-C)/C × 100 = 100%.
This question belongs to:
Maths
Percentage
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