document.write( "Question 453491: A certain aircraft can fly 1330 miles with the wind in 5 hours and travel the same distance against the wind in 7 hours. What is the speed of the wind? Can you please show all the steps to this problem THANK YOU SOOOOO MUCH \n" ); document.write( "
Algebra.Com's Answer #311570 by stanbon(75887)\"\" \"About 
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A certain aircraft can fly 1330 miles with the wind in 5 hours and travel the same distance against the wind in 7 hours.
\n" ); document.write( "What is the speed of the wind?
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\n" ); document.write( "With-wind DATA:
\n" ); document.write( "distance = 1330 miles ; time = 5 hrs ; rate = d/t = 1330/5 = 266 mph
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\n" ); document.write( "Against-wind DATA:
\n" ); document.write( "distance 1330 miles ; time = 7 hrs ; rate = d/t = 1330/7 = 190 mph
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\n" ); document.write( "Equations:
\n" ); document.write( "Let p be plane speed in still air.
\n" ); document.write( "Let w be wind speed.
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\n" ); document.write( "p + w = 266 mph
\n" ); document.write( "p - w = 190 mph
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\n" ); document.write( "Subtract to solve for wind speed:
\n" ); document.write( "2w = 76
\n" ); document.write( "wind speed = 38 mph
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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