document.write( "Question 198203: On Jerry's way to work in the morning, he was only able to travel at a reate of 20 mi/h because of trafficw. On his drive home, he averaged 40 mi/h. If his toral travel time was 1.5 hours, how long did it take him to drive to work? \n" ); document.write( "

Algebra.Com's Answer #148768 by arallie(162) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"20x-40y=0\"$
\n" ); document.write( " $\"x%2By=1.5\"$
\n" ); document.write( " $\"y=1.5-x\"$
\n" ); document.write( " $\"20x-40%281.5-x%29=0\"$
\n" ); document.write( " $\"20x-60%2B40x=0\"$
\n" ); document.write( " $\"60x=60\"$
\n" ); document.write( " $\"x=1\"$
\n" ); document.write( " $\"20%281%29-40y=0\"$
\n" ); document.write( " $\"20-40y=0\"$
\n" ); document.write( " $\"40y=20\"$
\n" ); document.write( " $\"y=.5\"$ \r
\n" ); document.write( "\n" ); document.write( "(1,.5)\r
\n" ); document.write( "\n" ); document.write( "How long did it take him to drive to work? 1 Hour \n" ); document.write( "

\n" );