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)![]() ![]() 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( " |