document.write( "Question 1031576: Two trucks leave the truck stop at the same time. One truck goes north, driving at an average speed that is 20kph slower than the truck driving east. After 12 min, the trucks are 20 kilometers apart. Find the average speed of each truck. \n" ); document.write( "

Algebra.Com's Answer #646267 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( "NORTHWARD     r-20                \r\n" );
document.write( "\r\n" );
document.write( "EASTWARD       r                  \r\n" );
document.write( "\r\n" );
document.write( "SEPARATION                             20\r\n" );
document.write( "

\n" ); document.write( "The 12 minutes travel time is $\"%281%2F5%29hour\"$ .\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The north and east distances form the legs of a right triangle, making distance relationship
\n" ); document.write( "conforming to Pythagorean Theorem Formula.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"highlight%28%28%28r-20%29%2F5%29%5E2%2B%28r%2F5%29%5E2=20%5E2%29\"$
\n" ); document.write( "Solve this for r.
\n" ); document.write( " \n" ); document.write( "

\n" );