Question

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 2-hour movie .write an equation and solve the problem

Answer 1

Answer:

Equation: y= 2.8x

She 336 pieces of popcorn in 2 hours

Step-by-step explanation:

Because Cynthia maintains a constant rate of eating, you would find the amount of popcorn per minute.

42÷15=2.8

She eats 2.8 pieces of popcorn per minute.

So you could write the equation y=2.8x

x- the number of minutes

y-total amount of popcorn eaten

Next you have to find the amount of popcorn she eats during the 2 hour movie

First you would convert 2 hour to minutes.

2×60= 120 minutes (60 minutes per hour)

Then insert 120 as the x value in the equation above

y= 2.8×120

y=336

Therefore the amount of popcorn Cynthia ate in 2 hours is 336 pieces.