Please help with this question. Please give a solid answer and a well explanation. Note: No blank answers, etc.

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

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

Math it's appreciated. (picture provided)