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Railways PYQCBT 2 2017

RRB NTPC · Question 109

A shopkeeper cheats to the extent of 21% while buying and selling fruits, by using tampered weights. His total gain (in percentage) is:

  1. 53.16

  2. 56.25

  3. 46.75

  4. 46.41

Show answer & explanation

Answer: (A) 53.16

Explanation

With false weights he receives 1210 g when buying 1 kg and gives only 790 g when selling 1 kg. His money grows by a factor of 1210/790 ≈ 1.5316, a gain of about 53.16%.