Railways PYQCBT 2 2017

RRB NTPC · Question 29

G and H can do a work in 30 days. If H alone can do it in 50 days, then G alone can do it in ______ days.

  1. 75

  2. 70

  3. 60

  4. 65

Show answer & explanation

Answer: (A) 75

Explanation

G's one-day work = 1/30 − 1/50 = (5 − 3)/150 = 1/75. So G alone takes 75 days.