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Algebra

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I need to set up this problem algebraically. Also I can't figure out to work it out. It's a relative rate problem.

Bob leaves Bismarck traveling east along Interstate 94 at 65 mph. At the same time Tony leaves Fargo traveling west on Interstate 94. Since he is pulling a trailer, he can go only 45 mph. Fargo is 193 east of Bismarck. How long will it be until they meet?

  • Algebra -

    let the time passes since they both left be t hours
    Bob went 65t
    Tony went 45t

    but when they met the sum of their distances has to be 193
    so 65t + 45t = 193

    etc.

  • Algebra -

    38g+46mg+4.2kg

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