Question

If 5/15  of a cistern is filled in 1 hour, how much time (in minutes) will be required to fill the rest of it?​

Answer 1

answer:-

• remaining part of cistern = 1-5/15 =>15-5/15 =>10/15 part if cistern is left to fill.
• time(in minutes)= 10/15 × 60 =>40 min

the answer is 40 minutes

hope it helps