Chris has 15 comic books about the Avengers. He goes to the comic book store and after he leaves, he now has 20 Avengers comics. What is Chris’ percent increase in Avenger comics?

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

Complete the steps to find 4.830 ÷ 5