<PRE><B>Question 498003</B>
This example is similar:
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You can jog at a speed of 8 miles per hour, and run at a speed of 12 miles per hour.  If you traveled 6 miles in 40 minutes, find the amount of time you jogged as well as the amount of time you ran.
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40 minutes = 2/3 hours
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d = distance jogging
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d/8 + (6-d)/12 = 2/3 hours
times 48
6d + 4(6-d) = 32
2d + 24 = 32
2d = 8
d = 4 miles jogging
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2 miles running
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