3 years ago

a copy machine can print 810 copies every 9 minutes. A laser printer printed 1,350 copies. How long did it take to print?

2 answers:

5 0

Answer:

Step-by-step explanation: You would think 15. 810 copies every 9, minutes. Nine divided by 810 equals 90. 90 copies every minute. 1,350 divided by 90 is fifteen. =fifteen.

labwork [276]3 years ago

3 0

810 / 9 = 1350 / x amount of minutes (cross-multiply)

x = 15 minutes

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