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WBCS Main Examination 2023 — Paper VI: Arithmetic and Test of Reasoning · Question 30 of 200

Q30
ArithmeticPercentage, Profit & Loss
Successive discounts of 50% and 50% is equivalent to
  1. a.100%
  2. b.75%
  3. c.50%
  4. d.25%

Answer: (B) 75%

After the first discount the price is 50% of the original, and the second 50% leaves 25% of the original. The single equivalent discount is therefore 100 − 25 = 75%. Adding the two (100%) is the common mistake.