Calculus
posted by Thomas .
A large tank is filled with 200 gallons of pure water. Brine containing 1 pound of
salt per gallon is pumped into the tank at the rate of 5 gallon per minute. The
wellmixed solution is pumped out at the same rate.
(a) Find the number A(t) of pounds of salt in the tank at any time t.
Please help! I am getting the wrong solution.
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