document.write( "Question 1066350: A boat traveled downstream a distance of 50 mi and then came right back. If the speed of the current was 20 mph and the total trip took 3 hours and 20 minutes, find the average speed of the boat relative to the water. \n" ); document.write( "

Algebra.Com's Answer #681519 by josgarithmetic(39630) $\"\"$ $\"About$

You can put this solution on YOUR website!

\r\n" );
document.write( "               SPEED        TIME           DISTANCE\r\n" );
document.write( "\r\n" );
document.write( "DOWN           r+20                      50\r\n" );
document.write( "\r\n" );
document.write( "UP             r-20                      50\r\n" );
document.write( "\r\n" );
document.write( "TOTAL                     \r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Solve this for r.
\n" ); document.write( " $\"50%2F%28r%2B20%29%2B50%2F%28r-20%29=3%261%2F3\"$ \n" ); document.write( "

\n" );