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Mathematics, 31.08.2019 22:30 brummy309506

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?
a. 6
b. 8
c. 10
d. 12
e. 14

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