Question

A copy machine makes 24 copies per minute. How many copies does it make in 4 minutes and 30 seconds?

Answer 1

108 copies.
Rate = 24/1
Time= 4 + 30 sec = 4 + 1/2 (as 30 sec = 1/2 min) = 9/2
Now, Copies = R x T
= 24 x 9/2
=108

Answer 2

thx

Answer 3

you can either set up a proportion or figure it out just by reading the problem carefully.
24 copies per minute... 4 min 30 sec.
24 x 4 = 96
30 sec = half a minute, so take half of 24, which is 12, and add it to 96 and you get 108 copies in 4 hrs and 30 sec.

Answer 4

thx

Answer 5

no problem :)