Tickets for a school play sold for $7.50 for each adult and $3 for each child the total receipts for the 113 tickets sold were $663 find the number of adult ticket sold

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