document.write( "Question 1101020: reem rowed her boat across lake dukan and back again in 3 hours if her speed coming back was 2km/h less than her speed going and if the distance each way was 7 km find her speed going and her speed coming back \n" ); document.write( "
Algebra.Com's Answer #715578 by josgarithmetic(39629)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "            SPEED      TIME    DISTANCE\r\n" );
document.write( "\r\n" );
document.write( "GOING         r        7/r       7\r\n" );
document.write( "\r\n" );
document.write( "RETURN       r-2       7/(r-2)   7\r\n" );
document.write( "\r\n" );
document.write( "Total                   3\r\n" );
document.write( "
\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"highlight%287%2Fr%2B7%2F%28r-2%29=3%29\"
\n" ); document.write( "Solve for r and evaluate r-2.\r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( "algebra steps should lead to \"3r%5E2-20r%2B14=0\";\r
\n" ); document.write( "\n" ); document.write( "\"r=%2820%2Bsqrt%28232%29%29%2F6\"\r
\n" ); document.write( "\n" ); document.write( "\"r=%2810%2B2%2Asqrt%2829%29%29%2F3\"\r
\n" ); document.write( "\n" ); document.write( "\"r=%2810%2B10.77%29%2F3\"\r
\n" ); document.write( "\n" ); document.write( "\"r=6.72\"------speed GOING\r
\n" ); document.write( "\n" ); document.write( "(May need rechecking)
\n" ); document.write( "
\n" );