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10 June, 15:28

A private jet flies the same distance in 10 hours that a commercial jet flies in 8 hours. If the speed of the commercial jet was 162 mph less than 2 times the speed of the private jet, find the speed of each jet.

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  1. 10 June, 16:27
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    Commercial jet's speed = 2x-162 (plug this in the equation below)

    Private jet's speed = x

    Equation:

    10 (x) = 8 (2x-162)

    10x = 16x - 1296

    6x = 1296

    x = 216 (Private jet's speed)

    Take the first equation and plug x value in;

    2x-162

    2 (216) - 162 = 270 (Commercial jet's speed)
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