Question

6 pipes are required to fill a tank in 1 hour 20 minutes. How long will it take if only 5 pipes a
the same type are used.

Answer 1

If 6 pipes fill the tank in 1 hour 20 minutes.
5 pipes fill tank in 55 minutes

Answer 2

Answer:

if 6 pipe fill tank in 1h 20 min

Then,5 pipe fill tank in 120 min×5=600 min

I think it will help you