| A 100 gallon tank initially contains 10 gallons of fresh water. At t = 0 a brine solution containi of salt per gallon is poured into the tank at the rate of 4 gal/min., while the well-stirred mixtu e tank at the rate of 1 gal/min. Let Q(t) be the amount of salt in the tank at time t. Write dov value problem for Q(t). You don't need to solve Q(t).

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