A population increases by 5% yearly. Its present population is 88,200. What was it 2 years ago? MCQ with Answer and Explanation
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Question #1
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A trader bought articles for Rs. 1200. Ten were damaged, rest sold at Rs. 2 more than CP each, total profit Rs. 60. Number of articles:
Correct Answer: Option B
Explanation:
Let n articles, CP each = 1200/n. Sold (n-10) at (1200/n + 2). Total SP = (n-10)(1200/n +2) = 1260. Solving gives n=100.
Let n articles, CP each = 1200/n. Sold (n-10) at (1200/n + 2). Total SP = (n-10)(1200/n +2) = 1260. Solving gives n=100.
This question belongs to:
Maths
Percentage
Question #2
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40% of a number exceeds 25% of the same number by 30. What is 75% of the number?
Correct Answer: Option B
Explanation:
0.4x - 0.25x = 0.15x = 30 → x = 200. 75% of 200 = 150.
0.4x - 0.25x = 0.15x = 30 → x = 200. 75% of 200 = 150.
This question belongs to:
Maths
Percentage
Question #3
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Student A gets 25% marks and fails by 20 marks. Student B gets 40% marks and passes by 40 marks. Find the total marks.
Correct Answer: Option A
Explanation:
Difference in percentage = 40% - 25% = 15%. Difference in marks = 40 + 20 = 60. 15% of Total = 60. Total = 400.
Difference in percentage = 40% - 25% = 15%. Difference in marks = 40 + 20 = 60. 15% of Total = 60. Total = 400.
This question belongs to:
Maths
Percentage
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