SOLUTION: Two joggers, one averaging 7 mph and one averaging 4 mph, start from a designated initial point. The slower jogger arrives at the end of the run 20 minutes after the other jogger.

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Question 904217: Two joggers, one averaging 7 mph and one averaging 4 mph, start from a designated initial point. The slower jogger arrives at the end of the run 20 minutes after the other jogger. Find the distance of the run.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
7x=4*(x+1/3)
7x=4x+4/3
3x=4/3
9x=4
x=4/9
7*4/9=28/9=3.1 miles
4*(4/9+1/6)=3.1 miles