Question

Every 10 minutes a teacher can print 480 copies if a teacher printed 720 copies how long did it take

Answer 1

15 Minutes

Explanation:

`(480)/(10) =(720)/(t)`

Where t is time in minutes

Cross multiply

480t=7200

t=
`(7200)/(480)`=
`(720)/(48)`=
`(60)/(4)`=15 Minutes

Answer 2

10 minutes for 480 copies. Divide 480 by 10 and get 48 copies per minute. If you divide 720 by 48 you get 15, so it takes 15 minutes to make 720 copies.

Explanation: