Posted by Stacey on Wednesday, October 23, 2013 at 10:00pm.
Markus jogs 4 mi around a track at an average rate of r mi/h. Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?

Algebra 1  Enough!  Ms. Sue, Wednesday, October 23, 2013 at 10:01pm
It will do you no good to keep posting the same question every minute or two!

Algebra 1  Steve, Wednesday, October 23, 2013 at 11:54pm
That said, try this:
Since time = distance/speed,
4/r + 1/(r3) = 1
r = 6
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