document.write( "Question 393309: If a plane can travel 510 miles per hour with the wind and 410 miles per hour against the when, find the speed of the plane in still air. \n" ); document.write( "

Algebra.Com's Answer #279153 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Let x represent the speed of the wind
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document.write( " 510mph -x = 410mph + x   |speeds equal taking the wind out of play
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document.write( "    100 = 2x
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document.write( "      x = 50mph
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document.write( "Speed of plane in still air = 460mph   (410mph + 50mph)
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