Cynthia ate 42 pieces of popcorn during the first 15 minutes of a movie. If she kept eating at the same rate

2-hour-movie

#1

cynthia ate 42 pieces of popcorn during the first 15 minutes of a movie. If she kept eating at the same rate, how many pieces of popcorn did she eat during the 2-hour movie? Write an equation and solve the problem.

Answer:

Since we already know that she ate 42 pieces of popcorn within 15 minutes and we know there are 120 minutes in 2 hours, considering that cynthia ate at the same rate for 2 hours we can divide 120 minutes by 15 minutes to get 8. This means that Cynthia ate 42 pieces of popcorn 8 times within those 2 hours, so we would multiply 42 by 8 to get a total of 336 pieces of popcorn.
(120/15) X 42 = 336 pieces of popcorn