Set up a proportion

11/10/2021

How many copies can be made in 3 minutes and 30 seconds, when you can make 32 copies per minute?

Change 3 minutes and 30 seconds to minutes, and then set up a proportion.

3 minutes and 30 seconds = 3.5 minutes

32 copies x copies
—————— = ——————— {set up a proportion…..copies over minutes for each}
1 minute 3.5 minutes

x = 112 {cross-multiplied}

112 copies in 3 minutes and 30 seconds