document.write( "Question 560032: Two cars leave Chicago, one traveling east and the other west. After 4 hours they are 492 miles apart. If one car is traveling 7 mph faster than the other, find the speed of each. \n" ); document.write( "

Algebra.Com's Answer #363634 by josmiceli(19441) $\"\"$ $\"About$

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You can think of one car as standing still
\n" ); document.write( "and the other traveling at the sum of their
\n" ); document.write( "speeds.
\n" ); document.write( "Let the speed of the slower car = $\"+s+\"$
\n" ); document.write( "The faster car's speed is $\"+s+%2B+7+\"$
\n" ); document.write( "-----------------
\n" ); document.write( "The equation of the moving car is
\n" ); document.write( " $\"+492+=+%28+s+%2B+s+%2B+7+%29%2A4+\"$
\n" ); document.write( " $\"+492+=+8s+%2B+28+\"$
\n" ); document.write( " $\"+8s+=+492+-+28+\"$
\n" ); document.write( " $\"+8s+=+464+\"$
\n" ); document.write( " $\"+s+=+58+\"$
\n" ); document.write( " $\"+s+%2B+7+=+65+\"$
\n" ); document.write( "Their speeds are 58 mi/hr and 65 mi/hr \n" ); document.write( "

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