SOLUTION: A tank is drained by two pipes. one pipe can empty the tank in 30 minutes while the other can empty it in 25 minutes. if the tank is 5/6 filled and both pipes are open at exactly 3

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A tank is drained by two pipes. one pipe can empty the tank in 30 minutes while the other can empty it in 25 minutes. if the tank is 5/6 filled and both pipes are open at exactly 3      Log On


   

Question 1120662: A tank is drained by two pipes. one pipe can empty the tank in 30 minutes while the other can empty it in 25 minutes. if the tank is 5/6 filled and both pipes are open at exactly 3pm, at what time will the tank be emptied?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Emptying rate in TANK per MINUTE
1%2F30%2B1%2F25
%281%2F30%29%285%2F5%29%2B%281%2F25%29%286%2F6%29
5%2F150%2B6%2F150
11%2F150

x, time in minutes to drain 5%2F6 of the tank
%2811%2F150%29x=5%2F6

x=%285%2F6%29%28150%2F11%29

5%2A25%2F11

11 minutes 22 seconds