document.write( "Question 1142664: To prepare for a marathon run, Sue ran 30 miles before she blistered her heel, and then she walked 1 additional mile. Her running speed was 12 times as fast as her walking speed. She was running and walking for 7 hours. Find Sue's running speed. \n" ); document.write( "

Algebra.Com's Answer #763375 by josgarithmetic(39625) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "               SPEED        TIME       DISTANCE\r\n" );
document.write( "\r\n" );
document.write( "RUN            r                        30\r\n" );
document.write( "\r\n" );
document.write( "WALK                                 1\r\n" );
document.write( "\r\n" );
document.write( "TOTAL                        7\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( " $\"highlight_green%2830%2Fr%2B12%2Fr=7%29\"$ \r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( " $\"42%2Fr=7\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"6%2Fr=1\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"highlight%28r=6%29\"$ \n" ); document.write( "

\n" );