document.write( "Question 1054332: A jet plane flying with the wind went 1030 mi in 2 h. Against the wind, the plane could only fly 900 mi in the same amount of time. Find the rate of the plane in calm air and the rate of the wind.
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Algebra.Com's Answer #669555 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "A jet plane flying with the wind went 1030 mi in 2 h. Against the wind, the plane could only fly 900 mi in the same amount of time. Find the rate of the plane in calm air and the rate of the wind.
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Let speed of plane in sill air, and speed of wind, be S and W, respectively
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document.write( "Flying WITH the wind, the total speed = \"matrix%281%2C4%2C+%221%2C030%22%2F2%2C+or%2C+515%2C+mph%29\"
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document.write( "Flying AGAINST the wind, the total speed = \"matrix%281%2C4%2C+900%2F2%2C+or%2C+450%2C+mph%29\"
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document.write( "We then get the following 2 TOTAL-SPEED equations:
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document.write( "S + W = 515 ------- eq (i)
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document.write( "S - W = 450 ------- eq (ii)
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document.write( "Using elimination, you can immediately find S
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document.write( "Substitute value for S into any of the 2 TOTAL-SPEED equations to find W. \n" );
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