Suppose a 100 gallon spherical tank contains a 10% salt water mixture. The tank is initially contains 30 gallons of mixture. THree gallons of water containing 2 lbs of salt flows in every minute. One gallon of mixture leaves the tank every minute. What is the concentration of salt when the tank is full

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer