Idon't get it can u explain it to me

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

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