A tank originally contains 100 gal of fresh water. Then watercontaining
lb of salt per gallon is poured into the tank at a rate of 2gal/min, and the mixture is allowed to leave at the same rate.After 10 min the process is stopped, and fresh water is poured intothe tank at a rate of
6 gal/min,
with the mixture again leaving at the same rate. Find the amountof salt in the tank at the end of an additional 10 min. (Round youranswer to two decimal places.)
