Question

if 5 pipe can fill the tank in 2hrs 40mins, how much longer will it take if there are only 4 pipes of the same type

Answer 1

Answer: 3h20m

Step-by-step explanation:

5 pipes in 160 mins = 1 tank

1 pipe in 1 minute = 1/(160*5)

4 pipe in 1 minute = 4/800=1/200

4 pipe in 200 minute = 1 tank