document.write( "Question 723851: A car leaves a certain town at noon travelling at 40 kph. At 1 pm another car leaves the town travelling at 50 kph. In how many hours will the second car overtake the first car?\r
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Algebra.Com's Answer #443399 by mananth(16946)\"\" \"About 
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Car I speed 40 km/h\r
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\n" ); document.write( "\n" ); document.write( "Since they are in same direction effective catch up speed = 50-40 = 10 kph\r
\n" ); document.write( "\n" ); document.write( "In 1 hour car I would have traveled 40 km\r
\n" ); document.write( "\n" ); document.write( "catch up time = catch up distance / catch up speed\r
\n" ); document.write( "\n" ); document.write( "xatch up time = 40/10= 4 hours\r
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