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Unformatted text preview: Time with the wind = t Time against the wind = t Therefore: 480 = (x+28)t 480 28 t x = + 320 = (x28)t 320 28 t x =Since time is the same, then we can say: 480 320 28 28 x x = +480(x28) = 320(x + 28) 480x 13440 = 320x + 8960 480x 320x = 8960 + 13440 160x = 22400 x = 22400 160 x = 140 miles The speed of the plane in still air is 140 miles per hour...
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This note was uploaded on 02/27/2008 for the course MATH 116 taught by Professor Philip during the Spring '08 term at A.T. Still University.
 Spring '08
 Philip
 Algebra

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