Jeff can paint his room in 16 hours, and together he and his sister Sarah can paint the same room in 4 hours. How long would it take his sister to paint the room herself? X
hours

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