document.write( "Question 475299: after running for a while at 8mph, Ludwig slowed to a walk at 4mph. If he traveled 68 miles in 12 hours, how far did he run and how far did he walk? \n" ); document.write( "
Algebra.Com's Answer #325907 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
total distance = 68
\n" ); document.write( "running distance =x
\n" ); document.write( "running speed = 8 mph
\n" ); document.write( "walking distance = 68-x
\n" ); document.write( "walking speed = 4 mph\r
\n" ); document.write( "\n" ); document.write( "time running + time walking = 12\r
\n" ); document.write( "\n" ); document.write( "t=d/r
\n" ); document.write( "x/8 + (68-x)/4= 12\r
\n" ); document.write( "\n" ); document.write( "LCD = 8 multiply by 8
\n" ); document.write( "x+2(68-x)=8*12
\n" ); document.write( "x+136-2x=96
\n" ); document.write( "-x=96-136
\n" ); document.write( "-x=-40
\n" ); document.write( "x=40
\n" ); document.write( "distance run = 40 miles\r
\n" ); document.write( "\n" ); document.write( "Balance he walked
\n" ); document.write( "m.ananth@hotmail.ca
\n" ); document.write( "
\n" );