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)![]() ![]() ![]() You can put this solution on YOUR website! 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( "*** \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 \n" ); document.write( " |