document.write( "Question 835077: two cars leave from the same point at the same time, traveling in opposite directions. one travels 15 mph slower than the other. after 6 hours, they are 639 miles apart. Find the rate of each car. \n" ); document.write( "
Algebra.Com's Answer #503349 by rfer(16322)\"\" \"About 
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6(x-15+x)=639
\n" ); document.write( "6x-90+6x=639
\n" ); document.write( "12x=639+90
\n" ); document.write( "12x=729
\n" ); document.write( "x=60.75
\n" ); document.write( "x-15=45.75
\n" ); document.write( "
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