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Railways PYQCBT 1 2016

RRB NTPC · Question 30

By selling 90 chocolates Rs. 160, a chocolate trader loses 20%. How many chocolates should he sell for Rs. 96 to make a profit of 20%? A. 45 B. 36 C. 54 D. 28

  1. C

  2. D

  3. A

  4. B

Show answer & explanation

Answer: (D) B

Explanation

Selling 90 chocolates for Rs 160 gives a 20% loss, so CP = 160/0.8 = Rs 200 for 90, i.e. Rs 20/9 each. For a 20% profit, SP per chocolate = 1.2 × 20/9 = Rs 8/3. For Rs 96 he should sell 96 ÷ 8/3 = 36 chocolates.