7. a tank with volume 100 m3 is filled mass of salt in the an infow pipe carries a salt solution with concentration 2 of 4 m3/min. the solution in the tank is well-mixed by a pair of swimming mermaids wtw pipe carries thue note to chemical engineers: that's how they really do it at chemical processing emired solution out of the tank at the rate of 4 m3/in. set up and solve the initial value problem to ind the with a salt solution with concentration 0.56 kg/m (hint: what is the initial kg/m3 into the tank at the rale ts). an outflow pipe car mass s(t) (kg) of salt in the tank at time t. 10 pts