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.
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.