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A person was asked to subtract 25% of a number from the original but he subtracted 25 from the number. His answer was 25 more than correct one. What was the original number?

Correct answer: D. 200

  • A. 160
  • B. 180
  • C. 225
  • D. 200

Explanation

Let the original number be x. The correct answer is x - 25% of x = 0.75x, while the mistaken answer is x - 25; since it is 25 more, x - 25 = 0.75x + 25, giving 0.25x = 50 and x = 200. The likely trap is 160, which comes from treating the 25% subtraction as a fixed amount without using the 25-mark difference.

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