How to put 412.638 in fraction form?

Which statements are true? see picture

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

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose