document.write( "Question 1118466: A bus averages 6 miles per hour faster than a trolley. If the bus travels 90 miles in the same time it takes the trolley to travel 75 miles, then what is the speed of each? \n" ); document.write( "
Algebra.Com's Answer #733782 by addingup(3677)\"\" \"About 
You can put this solution on YOUR website!
trolley: x
\n" ); document.write( "bus: x+6
\n" ); document.write( "75/x = 90/(x + 6)
\n" ); document.write( "75*(x + 6) = 90*x
\n" ); document.write( "75x + 450 = 90x
\n" ); document.write( "75x - 90x = -450
\n" ); document.write( "-15x = -450
\n" ); document.write( "x = 30
\n" ); document.write( "The trolley travels at 30 m.p.h. and the bus at 30 + 6 = 36 mph\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );