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Mathematics, 20.02.2020 22:52 artsycentury
Initially 15 grams of salt are dissolved into 25 liters of water. Brine with concentration of salt 4 grams per liter is added at a rate of 6 liters per minute. The tank is well mixed and drained at 6 liters per minute. a) Let x be the amount of salt, in grams, in the solution after t minutes have elapsed. Find a formula for the rate of change in the amount of salt, dx/dt, in terms of the amount of salt in the solution x. dxdt= grams/minute b) Find a formula for the amount of salt, in grams, after t minutes have elapsed. x(t)= grams c) How long must the process continue until there are exactly 20 grams of salt in the tank? minutes
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Initially 15 grams of salt are dissolved into 25 liters of water. Brine with concentration of salt 4...
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