SOLUTION: At a dairy plant, a milk tank can be filled in 4 hours (using the in-valve). Using the out-valve, the tank can be emptied in 12 hours. If both valves are open and milk is being pum
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Question 865723: At a dairy plant, a milk tank can be filled in 4 hours (using the in-valve). Using the out-valve, the tank can be emptied in 12 hours. If both valves are open and milk is being pump into the tank, how long will it take to fill the tank?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/4-1/12=1/x
3/12-1/12=1/x
2/12=1/c
1/6=1/c
c=6 hours to fill the tank
in 6 hours the tank is filled 1.5 times
it is half emptied in 6 hours.
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