The ages of employees at a certain company are normally distributed and the mean age is 36 with a standard deviation of 3 years. how many employees are between 30 and 42 years old?

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