document.write( "Question 397197: Beth was required to make a cross-country flight in training for her pilot's license. When she flew from her home airport, a steady 30 miles per hour wind was behind her, and the trip took 5 hours. When she returned against the wind, the flight took 7 hours. Find the plane's speed in still air and the distance traveled each way. \n" ); document.write( "

Algebra.Com's Answer #281570 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "Let x represent the speed of the plane
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document.write( "Questions states***   (D = r*t  OR r = D/t
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document.write( "  x + 30 =  D/5
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document.write( "  x - 30 =  D/7
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document.write( " 2x = (12/35) D
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document.write( "  x = (6/35)D
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document.write( "  x + 30 =  D /5
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document.write( "(6/35)D + 30 =  D/5
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document.write( "       30 = (1/35)D
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document.write( "      30*35 = D
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document.write( "      1050mi  = D
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document.write( "              x = (6/35)1050 = 180mph\r
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document.write( "CHECKING our Answer
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document.write( "  150 = 1050/7 \n" );
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