document.write( "Question 1202341: Rosie ran to the park at 7 miles per hour and walked back home at 3 miles per hour. How many miles was it to the park if the round trip took 20 hours? Begin by drawing a diagram of distances traveled and writing the distance equation on your paper. \n" ); document.write( "

Algebra.Com's Answer #837100 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
Follows an often used form.
\n" ); document.write( "Here unknown variable, x for unknown time to run.\r
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "              SPEED          TIME        DISTANCE\r\n" );
document.write( "\r\n" );
document.write( "RAN TO            r             x          d\r\n" );
document.write( "\r\n" );
document.write( "WALKED BACK       w            t-x        d\r\n" );
document.write( "\r\n" );
document.write( "TOTAL                           t        2d\r\n" );
document.write( "

\n" ); document.write( " $\"rx=w%28t-x%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"rx=wt-wx\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"rx%2Bwx=wt\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight_green%28x=%28wt%29%2F%28r%2Bw%29%29\"$ \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "You are given r=7, w=3, and t=20.
\n" ); document.write( "Evaluate x.
\n" ); document.write( "Then $\"d=rx\"$ . \n" ); document.write( "

\n" );