Acc. Algebra 2

At 10:30 am two planes leave to Houston, one flying east 560km/h and the other flying west at 640 km/h. At what time will they both ne 2100km apart.

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asked by Lisa
  1. They would be flying for the same amount of time , t hours
    distance covered by first = 560t km
    distance covered by second = 640t km

    560t + 640t = 2100
    1200t = 2100
    t = 1.75 hrs

    or 1 hour and 45 minutes

    so at 10:30 + 1:45 or 12:15 pm they will be 2100 km apart

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    posted by Reiny

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