SOLUTION: 2 pipes fill a tank in 10 minutes, large pipe fill twice the smaller and out of one pipe empty 45 minutes. how much time taken by the small pipe to fill

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Question 696715: 2 pipes fill a tank in 10 minutes, large pipe fill twice the smaller and out of one pipe empty 45 minutes. how much time taken by the small pipe to fill
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
2 pipes fill a tank in 10 minutes, large pipe fill twice the smaller and out of one pipe empty 45 minutes.
how much time taken by the small pipe to fill?
:
Let t = time for the small pipe to fill the tank (in minutes
then
.5t = time for the large pipe to fill it
:
let the completed job = 1 (a full tank
:
10%2F%28.5t%29 + 10%2Ft = 1
multiply by t
2(10) + 10 = t
20 + 10 = t
t = 30 min for the small pipe working alone