It takes 12 hours to fill a pool with the inlet pipe. It can be emptied in 15 hours with the outlet pipe. If the pool is 1/2 full to begin with, how long will it take to fill it from there if both pipes are open?

Respuesta :

6 should be right answer to your problem

Answer:

12x15=100

Step-by-step explanation:

Its times because I know it