Question

4 pipes can fill a tank in 70 min. how long will it take to fill the tank if 1 pipe used

Answer 1

4 pipe can take 70 min

1 pipe can take = ?

= 70 * 1/ 4

= 17.5

= 17 minute 5 second...

Answer 2

4pipes fill the tank in 70min
so ,
1 pipe fill the tank in 70/4=17.5min