Jeff takes 20 minutes to jog around the race course one time, and 25 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long?

• The average speed is the total distance divided by total time. Here, total distance =3+3=6 and the total time = 20 +25=45. Dividing the total distance to the total time will give = 6/45=0.93 miles per min.
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