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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 -

    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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