a cistern can be filled by an inlet pipe in 6 hours and emptied by an

1.	a cistern can be filled by an inlet pipe in 6 hours and emptied by an outlet pipe in 10 hours. After 3 hours thepipe is closed. How much time will the inlet pipe take to fill up the remaining part of the tank?.
Answer» (3+x)/6-3/10=1 x = 24/5 =4.8 hours to fill the cistern after the outlet is closed. If the outlet pipe were kept open, it would take 15 hours to fill the cistern

a cistern can be filled by an inlet pipe in 6 hours and emptied by an outlet pipe in 10 hours. After 3 hours thepipe is closed. How much time will the inlet pipe take to fill up the remaining part of the tank?.

Answer»

(3+x)/6-3/10=1

x = 24/5 =4.8 hours to fill the cistern after the outlet is closed.

If the outlet pipe were kept open, it would take 15 hours to fill the cistern