Two students A and B appeared in an examination in which A scored 12% more…
2017
Two students A and B appeared in an examination in which A scored 12% more than B. B scored approximately what percent less than A?
Answer: D. 10.7% — Solution: To find how much percent B is less than A, measure the difference relative to A. Step 1: Choose a convenient value for B, for example B = 100. Step…
- A.
20%
- B.
16.67%
- C.
12%
- D.
10.7%
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Correct answer: D
Solution: To find how much percent B is less than A, measure the difference relative to A.
Step 1: Choose a convenient value for B, for example B = 100.
Step 2: Since A scored 12% more than B, A = 100 + 12 = 112.
Step 3: Percent by which B is less than A = (A − B)/A × 100 = (112 − 100)/112 × 100 = 12/112 × 100 ≈ 10.714%.
Answer: Approximately 10.7%.
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