Question

A tank can be filled by an inlet pipe in 4 hours and
emptied by an outlet pipe in 10 hours. How long will
it take to fill the tank, if both are opened together?​

Answer 1

Step-by-step explanation:

If an inlet pipe takes 4 hrs to fill and an outlet pipe takes 6 hrs to empty then when both the pipes are open then the tank will be half-filled in 6 hrs. Also, an outlet pipe takes 6 hrs to empty the tank. Thus, the tank will be half-filled in 6 hours.

Answer 2

Answer:

If an inlet pipe takes 4 hrs to fill and an outlet pipe takes 6 hrs to empty then when both the pipes are open then the tank will be half-filled in 6 hrs. Also, an outlet pipe takes 6 hrs to empty the tank. Thus, the tank will be half-filled in 6 hours.