document.write( "Question 336061: I need help solving this problem.\r
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document.write( "A car travels 300 km in the same amount of time that a freight train travels 200 km. The speed of the car is 20km/hr more than the speed of the train. Find the speed of both the car and the train. \n" );
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Algebra.Com's Answer #241007 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let speed of train be x km/hr \n" ); document.write( "speed of car = x+20 km/hr \n" ); document.write( ".. \n" ); document.write( "distance by car = 300 km \n" ); document.write( "distance by train = 200 km \n" ); document.write( ".. \n" ); document.write( "Time taken by both is same \n" ); document.write( "200/x = 300 (x+20) \n" ); document.write( "300x = 200(x+20) \n" ); document.write( "300x = 200x +4000 \n" ); document.write( "add -200x \n" ); document.write( "300x-200x=4000 \n" ); document.write( "100x = 4000 \n" ); document.write( "x = 40 km/hr speed of train \n" ); document.write( "x+20 = 40 +20 = 60km/hr. speed of car \n" ); document.write( " \n" ); document.write( " |