Question

A copy machine makes 24 copies per minute. how many copies does it make in 5 minutes and 30 seconds

Answer 1

Do 24÷5.5
5.5 because 5 min and the 30 sec.=5.5 (30 sec. is half of a  minute 1/2=.5)
so 24÷5.5=4.363636364 round it up to 4.4

Answer 2

In 1 minute the copy machine copies = 24
That means
In 60 seconds the copy machine copies = 24
First we need to convert 5 minutes and 30 seconds to seconds
Then
5 minutes and 30 seconds = (5 * 60) + 30
                                           = 300 + 30
                                           = 330 seconds
So
In 330 seconds the copy machine will copy = (24/60) * 330
                                                                     = 4 * 33
                                                                     = 132
So in 5 minutes and 30 seconds the copy machine will copy 132 copies.