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How do I solve this rational equation word problem?

Asked by chelle21689 (4961 points ) October 25th, 2010

I’m having a very hard time figuring this out.
“Two joggers, one averaging 8mph and one averaging 6mph, start from a designated initial point. The slower jogger arrives at the end of the run a half hour after the other jogger. Find the distance of the run.

This is how I set it up.
8X=6X+180
Then, I cross multiply. I get the wrong answer though. The answer is 12 miles.

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