If A got 80 marks and B got 60 marks, then what percent of A's mark is B's mark?
Correct answer: D. 75%
- A. 60%
- B. 80%
- C. 65%
- D. 75%
- E. None of these
Explanation
B's marks as a percentage of A's marks are calculated using A as the base: (60 marks ÷ 80 marks) x 100 = 75%. The likely trap is 80%, which reverses the comparison and treats A's marks as a percentage of B's marks.
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About Percentages
Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.
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