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7 September, 03:33

If a plane can travel 490 miles per hour with the wind and 450 miles per hour against the wind, find the speed of the plane without a wind and the speed of the wind.

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Answers (2)
  1. 7 September, 04:34
    0
    The accurate answer will be 470mi/hour
  2. 7 September, 06:47
    0
    S=plane's speed

    w=windspeed

    travels490 mh with wind

    450 agains wind

    s+w=490mph

    s-w=450

    add them toegether

    s+w=490

    s-w=450 +

    2s+0w=940

    2s=940

    divide by 2

    s=470

    find wind speed

    s+w=490

    470+w=490

    w=20

    windspeed=20mph

    planespeed=470mph
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