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Tank PS

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Tank PS

by aj5105 » Sun Jan 18, 2009 9:09 am
A fills the tank 3 hours. B fills the tank 1.5 hours. C empties the tank 4 hours. If the tank is 3/4th filled, how long will it take A & B to fill when C is minusing?


To solve,I framed this equation:
t/3 + t/1.5 = 1/4 + t/4

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by arzanr » Sun Jan 18, 2009 9:13 am
I get 20 minutess. Is that correct?
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by aj5105 » Sun Jan 18, 2009 9:24 am
yup, solving the above equation, we get 20 minutes.
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