Question

A copy machine makes 36 copies per minute. how many copies does it make in 3 minutes and 45 seconds

Answer 1

36 copies x 3.45 minutes = 124 copies

Answer 2

A copy machine makes 36 copies in a minute (1).

Multiply 36 copies by 3.75 (3 min and 45 sec) to find how many copies it can make within that time.
(36)(3.75) = 135

The copy machine can make 135 copies in 3 minutes and 45 seconds.