Question

A machine fills 80 containers of cookies in 20 minutes. At the same rate, how many containers of cookies could the machine fill in 8 hours?

Answer 1

Explanation:

80 containers every 20min

theirs is 60min in an hr

80 for 20min

80 for 20min

+80 for 20min

______________

240 for 60min.

240

× 8hrs

___________

1,920 containers

Answer 2

1920 containers of cookies could be filled by the machine in 8 hours.

Explanation:

To solve this problem, we will follow the steps below;

First, lets change 8 hours to minutes

8 hours = 8 × 60 =480 minutes

Now using proportion,

Let x be the number of containers of cookies the machine can fill in 8 hours

20 minutes = 80 containers

480 minutes = x

cross-multiply

20×x = 480×80

20 x =38400

Divide both-side of the equation by 20

`(20X)/(20)` =
`(38400)/(20)`

(At the left-hand side of the equation 20 will cancel-out 20 leaving us with x while at the right-hand side of the equation 28400 will be divided by 20)

x= 1920 containers.

Therefore, 1920 containers of cookies could be filled by the machine in 8 hours.