Question

A copy machine makes 153 copies in 4 minutes and 15 seconds how many copies does it make per minute

Answer 1

`\boxed{\sf 36 \ copies \ per \ minute}`

Explanation:

`\sf 4 \ minutes \ 15 \ seconds = 4.25 \ minutes`

`\sf The \ copy \ machine \ makes \ 153 \ copies \ in \ 4.25 \ minutes.`

`\sf To \ find \ copies \ per \ minute, \ divide \ the \ number \ of`

`\sf copies \ with \ the \ number \ of \ minutes.`

`\displaystyle (153)/(4.25) =36`

`\sf The \ copy \ machine \ makes \ 36 \ copies \ per \ minute.`

Answer 2

1 minute = 60 seconds

15 seconds /60 = 0.25 minutes.

Total time in minutes is 4.25

Divide total copies by total minutes:

153 / 4.25 = 36 copies per minute