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Algebra

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Abe and Sal left at the same time. They traveled in opposite directions. Sal traveled 50mph faster than Abe. After four hours, they were 400 miles apart. Find Abe's speed.

  • Algebra -

    speed 1 = s
    speed 2 = s + 50

    total speed apart = 2 s + 50

    400 miles = (2 s + 50) miles/hr * 4 hours

    2 s + 50 = 100

    s = 25 mph

    Sal was probably speeding

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