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math algebra

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Trains A and B are traveling the same direction on parallel tracks. Train A is traveling at 100 mph and train B is traveling 110 mph. Train A passes a station at 6:10 A.M. If train B passes the same station at 6:40 A.M. at what time will train B catch up with Train A?

  • math algebra -

    They are 1/2 hour apart. To catch up, they have to travel the same distance.

    d=100(t)
    d=110(t-.5)
    set them equal
    100t=110t-55
    55=10t
    t= 5.5 hrs.
    check my thinking.

  • math algebra -

    would that be 11:30 am?

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