document.write( "Question 1060103: A plane can fly 280 miles downwind in the same amount of time as it can travel 190 miles upwind. Find the velocity of the wind if the plane can fly 235 mph in still air. \n" ); document.write( "

Algebra.Com's Answer #675112 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "A plane can fly 280 miles downwind in the same amount of time as it can travel 190 miles upwind. Find the velocity of the wind if the plane can fly 235 mph in still air.
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Let the wind speed be W
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document.write( "Then time spent flying downwind = 
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document.write( "Time spent flying upwind = 
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document.write( "We then get the following TIME equation: 
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document.write( "190(235 + W) = 280(235 - W) ------ Cross-multiplying
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document.write( "190(235) + 190W = 280(235) - 280W
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document.write( "190W + 280W = 280(235) - 190(235)
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document.write( "470W = 90(235)
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document.write( "W, or speed of wind =  \n" );
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