document.write( "Question 38368: Franklin can ride his bike from his university to his home at 25 km/h.
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document.write( "When he returns by car, he travels at 75 km/h.
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document.write( "The bike trip is 2 hours longer than the car trip.
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document.write( "How many kilometers is it from the university to Franklin's home? \n" );
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Algebra.Com's Answer #23850 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Remember D = RT, distance = rate*time. \n" ); document.write( "Let us call his time for the first trip, t. Thus the time on his return car trip is t - 2. The distances are the same so we have \n" ); document.write( "25t = 75(t - 2) \n" ); document.write( "25t = 75t - 150 \n" ); document.write( "-50t = -150 \n" ); document.write( "t = 3 \n" ); document.write( "So the distance is 25t or 75 miles. \n" ); document.write( " |