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16 April, 00:03

A helicopter flies 168 miles against the wind in 2 hours; with the wind, it can

fly 252 miles in the same amount of time. Find the speed of the helicopter in still air.

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  1. 16 April, 01:56
    0
    105 mile/hour

    Step-by-step explanation:

    (H - W) x 2 = 168 against wind, speed = helicopter - wind

    (H + W) x 2 = 252

    H - W = 84 against wind, speed = helicopter - wind

    H + W = 126

    2H = 84 + 126 = 210

    H = 105
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