SOLUTION: A cistern can be filled by an inlet pipe in 6 hours & emptied by an outlet pipe in 10 hours. After 3 hours the outlet pipe is closed. How much time to fill up the remaining part o

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A cistern can be filled by an inlet pipe in 6 hours & emptied by an outlet pipe in 10 hours. After 3 hours the outlet pipe is closed. How much time to fill up the remaining part o      Log On


   

Question 839591: A cistern can be filled by an inlet pipe in 6 hours & emptied by an outlet pipe in 10 hours. After 3 hours the outlet pipe is closed. How much time to fill up the remaining part of the tank?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
(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