document.write( "Question 910248: An airplane went 960 miles in the same length of time that a second plane went 1,200 miles. The speed of the second plane was 40 miles an hour faster than that of the first. How long did each plane travel? \n" ); document.write( "
Algebra.Com's Answer #552322 by lwsshak3(11628)\"\" \"About 
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An airplane went 960 miles in the same length of time that a second plane went 1,200 miles. The speed of the second plane was 40 miles an hour faster than that of the first. How long did each plane travel?
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\n" ); document.write( "let x=speed of 1st plane
\n" ); document.write( "x+40=speed of 2nd plane
\n" ); document.write( "distance/speed=travel time
\n" ); document.write( "..
\n" ); document.write( "960/x=1200/(x+40)
\n" ); document.write( "1200x=960x+38400
\n" ); document.write( "240x=38400
\n" ); document.write( "x=160
\n" ); document.write( "x+40=200
\n" ); document.write( "960/160=6
\n" ); document.write( "How long did each plane travel? 6 hrs
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