document.write( "Question 624396: a car starts south at 40mph. one hour later a second car starts south form the same point. if the second car overtakes the first one in three hours, finds its speed. \n" ); document.write( "
Algebra.Com's Answer #392714 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
a car starts south at 40mph. one hour later a second car starts south form the same point. if the second car overtakes the first one in three hours, finds its speed.
\n" ); document.write( "Let x = speed of second car
\n" ); document.write( "then applying distance formula:
\n" ); document.write( "first car drives one hour longer than second car
\n" ); document.write( "\"distance traveled by first car\" = \"distance traveled by second car\"
\n" ); document.write( "(40)(3+1) = x(3)
\n" ); document.write( "(40)(4) = x(3)
\n" ); document.write( "160 = x(3)
\n" ); document.write( "160/3 = x
\n" ); document.write( "53.33 mph = x\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );