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at noon two planes leave at 3,377mi apart and are coming toward each other at a parallel line if one travels at 610mph and the other 618mph how long will it take to reach each other

  • math -

    recall that speed is distance travelled per unit time, or
    v = d/t
    since they are travelling towards each other, we add their speeds (since travelling towards each other consumes less time for them to meet than travelling in the same direction)
    v = d/t
    610 + 618 = 3377/t
    1228 = 3377/t
    1228*t = 3377
    t = 3377/1228
    t = 2.75 hours

    hope this helps~ :)

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