document.write( "Question 1011618: A jet can fly 550mph in calm air .Traveling with the wind, the plane can fly 2520 miles in the same amount of time as it flies 1880 miles against the wind .... Find the time and rate of wind ? Please show how you solved it \n" ); document.write( "

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\n" ); document.write( "A jet can fly 550mph in calm air .Traveling with the wind, the plane can fly 2520 miles in the same amount of time as it flies 1880 miles against the wind .... Find the time and rate of wind ? Please show how you solved it
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Let speed of wind be, W
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document.write( "Then 
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document.write( "1,880(550 + W) = 2,520(550 - W) --------- Cross-multiplying
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document.write( "1,880(550) + 1,880W = 2,520(550) - 2,520W
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document.write( "1,880W + 2,520W = 2,520(550) - 1,880(550)
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document.write( "4,400W = 640(550)
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document.write( "80(55W) = 80(8)(550)
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document.write( "(55W) = (8)(550)
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document.write( "55W = 8(550)
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document.write( "W, or speed of wind = , or  mph\r
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document.write( "Time taken to cover each distance: , or  -------->  hours \n" );
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