document.write( "Question 18913: A car started out from Memphis toward Little Rock at the rate of 60 km/h. A second car left from the same point 2h later and drove along the same route at 75km/h. How long did it take the second car to overtake the first car? \n" ); document.write( "
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A car started out from Memphis toward Little Rock at the rate of 60 km/h. A second car left from the same point 2h later and drove along the same route at 75km/h. How long did it take the second car to overtake the first car?\r
\n" ); document.write( "\n" ); document.write( "Let the time be x\r
\n" ); document.write( "\n" ); document.write( "60(x+2)=75x
\n" ); document.write( "60x+120=75x
\n" ); document.write( "60x+120-60x=75x-60x
\n" ); document.write( "120=15x (divide both sides by 15)
\n" ); document.write( "x=8
\n" ); document.write( "
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