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Mathematics 9 Online
OpenStudy (raffle_snaffle):

A tank contains 1000 liters (L) of a solution consisting of 100 kg of salt dissolved in water. Pure water is pumped into the tank at the rate of 5L/2, and the mixture-kept uniform by stirring-is pumped out at the same rate. How long will it be until only 10 kg of salt remains in the tank?

OpenStudy (raffle_snaffle):

I have a solution but not the right answer.

OpenStudy (raffle_snaffle):

So my differential equation is this |dw:1397011736371:dw|

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