What is the multiple of 4 and8

The triangles are similar. what is the value of x? show your work.

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

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41