how do you do a problem like this?

720m/day=?m/mm

your units don't match and make no sense.

did you mean 720 m/day = ? m/minute?

there are 24*60 minutes in a day.

so 720 m/day = 720 m/1440 minutes
=1/2 m/minute

thanks for your help my teacher has me screwed up.

To solve a problem like this where the units are mismatched, you need to convert the given quantity into the desired unit. In this case, you want to convert 720 meters per day into meters per minute.

1. Start by noting that there are 24 hours in a day and 60 minutes in an hour, so there are 24 * 60 = 1440 minutes in a day.

2. Next, divide the given quantity of 720 meters by 1440 minutes to find out how many meters there are per minute:

720 m / 1440 min = 0.5 m/min

Therefore, 720 meters per day is equal to 0.5 meters per minute (or 1/2 m/min).

It's common for units to be confusing or mismatched, but by following these steps, you can convert units and solve problems with different unit measures.