<PRE><B>Question 154650</B>
Jane skates 9 miles each morning. Today, she averaged 10 miles per hour for the first 6 miles but then slowed to 5 miles per hour for the rest of the trip. How long did the entire trip take?
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First 6 miles DATA:
distance = 6 mi ; rate = 10 mph; time = d/r = 6/10 = 3/5 hrs
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Last 3 miles DATA:
distance = 3 mi ; tate = 4 mph; time = d/r = 3/4 hrs
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Total time:
(3/5) + (3/4) = 12/20 + 15/20 = 27/20 = 1 7/20 hrs.
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Cheers,
Stan H.</PRE>