document.write( "Question 1173680: It took Maria 9 hours to drive the 580 km between Devils Basin and Tumbleweed. The first part of
\n" ); document.write( "the trip was through mountains and she averaged 60 km/h. Once out of the mountains, she
\n" ); document.write( "averaged 70 km/h the rest of the way. How many hours did she spend driving through the
\n" ); document.write( "mountains?
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #798949 by josgarithmetic(39625) $\"\"$ $\"About$

You can put this solution on YOUR website!
RATE*TIME=DISTANCE
\n" ); document.write( "

\r\n" );
document.write( "              SPEED        TIME          DISTANCE\r\n" );
document.write( "\r\n" );
document.write( "firstpart       60           x             60x\r\n" );
document.write( "\r\n" );
document.write( "secondpart      70          9-x            70(9-x)\r\n" );
document.write( "\r\n" );
document.write( "TOTAL                         9               580\r\n" );
document.write( "

\n" ); document.write( "Total distance gives the equation $\"60x%2B70%289-x%29=580\"$ .\r
\n" ); document.write( "\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( ". \n" ); document.write( "

\n" );