SOLUTION: Carrie trained for 3 hours yesterday. She ran 24 miles and then biked 18 miles. Her biking speed is 6 mph faster than her running speed. What is her running speed?

Question 1164846: Carrie trained for 3 hours yesterday. She ran 24 miles and then biked 18 miles. Her biking speed is 6 mph faster than her running speed. What is her running speed?
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!

           SPEED       TIME        DISTANCE

RAN          r          24/r          24

BIKE        r+6        18/(r+6)       18

Total                    3

Solve for r, in equation .

This example lets you multiply both sides by :

and then multiply both sides by (or the two steps could have been combined into one).

and continue,
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