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Railways PYQCBT 1 2016

RRB NTPC · Question 92

Prashanth is twice as good a sportsman as Tarun and together they finish a piece of work in 21 days. In how many days will Tarun alone finish the work? A. 42 B. 63 C. 84 D. 50

  1. A

  2. D

  3. B

  4. C

Show answer & explanation

Answer: (C) B

Explanation

Let Tarun do 1 unit a day and Prashanth 2. Together they do 3 units a day for 21 days, so the work is 63 units. Tarun alone needs 63 days.