document.write( "Question 900007: the sum of the speeds of two trains is 720.7 miles per hour. if the speed of the first train is 7.3 mph faster than the second train, find the speeds of each \n" ); document.write( "
Algebra.Com's Answer #545736 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! the sum of the speeds of two trains is 720.7 miles per hour. if the speed of the first train is 7.3 mph faster than the second train, find the speeds of each \n" ); document.write( "*** \n" ); document.write( "let x=speed of 2nd train \n" ); document.write( "x+7.3=speed of 1st train \n" ); document.write( "x+(x+7.3)=720.7 \n" ); document.write( "2x+7.3=720.7 \n" ); document.write( "2x=720.7-7.3 \n" ); document.write( "2x=713.4 \n" ); document.write( "x=356.7 \n" ); document.write( "x+7.3=364 \n" ); document.write( "speed of 2nd train=356.7 mph \n" ); document.write( "speed of 1st train=364 mph \n" ); document.write( " |