Question 799368
a pipe can fill a tank in 15 hours. The tank develop a hole and 10% of water leaks out . 
The pipe will now fill the tank in:
:
Let t = time for pipe to fill tank with leak
Let the full tank = 1
:
If the leak empties at 10% of the fill rate, 
it would take 150 hrs to empty a full tank
:
{{{t/15}}} - {{{t/150}}} = 1
multiply by 150 to clear the denominators
10t - 1t = 150
9t = 150
t = {{{150/9}}}
t = 16{{{2/3}}} hrs to fill it with the leak