document.write( "Question 561196: Two trucks left Vancouver, one going east on the Trans Canada Highway and the other west. The truck going east drove 8 km/h faster since it was partly downhill. At the end of 5h, they discover over their CB radios that they are 460 km apart. How fast is each truck traveling? \n" ); document.write( "

Algebra.Com's Answer #364205 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Think of 1 truck as standing still and the other
\n" ); document.write( "traveling at the sum of their speeds
\n" ); document.write( "Let $\"+s+\"$ = speed in km/hr of truck going west
\n" ); document.write( " $\"+s+%2B+8+\"$ = speed in km/hr of truck going east
\n" ); document.write( "---------------
\n" ); document.write( " $\"+460+=+%28+s+%2B+s+%2B+8+%29%2A5+\"$
\n" ); document.write( " $\"+460+=+%28+2s+%2B+8+%29%2A5+\"$
\n" ); document.write( " $\"+460+=+10s+%2B+40+\"$
\n" ); document.write( " $\"+10s+=+420+\"$
\n" ); document.write( " $\"+s+=+42+\"$
\n" ); document.write( " $\"+s+%2B+8+=+50+\"$
\n" ); document.write( "The truck going west travels at 42 km/hr
\n" ); document.write( "The truck going east travels at 50 km/hr
\n" ); document.write( "check answer:
\n" ); document.write( "east bound truck:
\n" ); document.write( " $\"+d%5B1%5D+=+50%2A5+\"$
\n" ); document.write( " $\"+d%5B1%5D+=+250+\"$
\n" ); document.write( "west bound truck:
\n" ); document.write( " $\"+d%5B2%5D+=+42%2A5+\"$
\n" ); document.write( " $\"+d%5B2%5D+=+210+\"$
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+250+%2B+210+\"$
\n" ); document.write( " $\"+d%5B1%5D+%2B+d%5B2%5D+=+460+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );