demellob2018 demellob2018
  • 26-03-2018
  • Mathematics
contestada


A copy machine makes
154 copies in
5 minutes and 30
seconds. How many copies does it make per minute?

Respuesta :

Critzlez
Critzlez Critzlez
  • 26-03-2018
This problem can be represented in a formula with fractions. To make it more simple, we are converting 5m30s to just pure seconds, which = 154 copies in 330 seconds.

You set up the formula like this: 154/330 = x/60. (it is x/60 because you want to know the x amount of copies per 60 seconds)

Cross multiply, you get 330x = 9240. Divide both sides by 330, you get:

 x = 28 copies.

The final answer is 28 copies per minute
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