Hello Carl,
distance = (speed)* (time)
Now, let's watch for the units. You're given speed in miles per hour, but you're also given time in... minutes. That's not consistent. So you could convert minutes to hours. Let's do that.
60 minutes is an hour. So 10 minutes would be 10/60 of an hour, which simplifies to 1/6 of an hour.
Now, you can find the distance traveled: distance = 72 miles/hour * 1/6 hour = 12 miles.