document.write( "Question 156743: the fast freight train made the trip in 6 hours. The next day the slow freight train made the same trip in 8 hours. What was the speed of the slow freight train if the fast freight train traveled 20 mph faster than the slow freight train? \n" ); document.write( "
Algebra.Com's Answer #115577 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
the fast freight train made the trip in 6 hours. The next day the slow freight train made the same trip in 8 hours. What was the speed of the slow freight train if the fast freight train traveled 20 mph faster than the slow freight train?
\n" ); document.write( ".
\n" ); document.write( "Let x= speed of slow freight train
\n" ); document.write( "then
\n" ); document.write( "x+20 = speed of fast freight train
\n" ); document.write( ".
\n" ); document.write( "Applying the distance formula:
\n" ); document.write( "d = rt
\n" ); document.write( "where
\n" ); document.write( "d is distance
\n" ); document.write( "r is rate or speed
\n" ); document.write( "t is time
\n" ); document.write( ".
\n" ); document.write( "\"distance traveled by fast train\"=\"distance traveled by slow train\"
\n" ); document.write( "6(x+20) = 8x
\n" ); document.write( "6x+120 = 8x
\n" ); document.write( "120 = 2x
\n" ); document.write( "60 mph = x (speed of slow freight train)
\n" ); document.write( " \n" ); document.write( "
\n" );