Danielsville is 20
miles frm Jim's home in Athens. He Drives 60 mph going to a meeting
(he is almost late) but coming home the weather is bad and drives
30 mph. What is his average speed for the time he is on the road?
A. Discuss why 45 mph is not correct.
Going to D'ville took 1/3 of an hour. Coming home took 2/3 of an hour. So the total 40 miles took one hour. The speed is 40 mph.
B. Use
to verify and develop an understanding of how
to find average rates. Elaboration.
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