Homework Help: Algebra

Posted by Anonymous on Monday, October 22, 2012 at 8:40am.

2 cyclists travel opposite on circular trail that is 5 miles long. one cyclist travels 12 miles per hour, the other travels 18 miles per hour. How long before they meet?

Algebra - Reiny, Monday, October 22, 2012 at 9:27am
Visualize the track laid out in a straight line, then they would meet if the total distance they traveled is 5 miles, of course they both took the same time.

let that time be t
12t + 18t = 5
30t = 5
t = 5/30 = 1/6 hour or 10 minutes.

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