document.write( "Question 521595: Two trains made the same 350-mile run. Since one train traveled 15 mph faster than the other, it arrived 3 hours earlier. Find the speed of each train.\r
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document.write( "This is how I set it up, but I'm lost after that\r
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document.write( "350/x +3= 350/x-15 \n" );
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Algebra.Com's Answer #346547 by umnikmo(75)![]() ![]() ![]() You can put this solution on YOUR website! V1=V2+15 \n" ); document.write( "t1=350/V1=350/(V2+15) \n" ); document.write( "t2=350/V2\r \n" ); document.write( "\n" ); document.write( "t1+3=t2 \n" ); document.write( "350/(V2+15)+3=350/V2\r \n" ); document.write( "\n" ); document.write( "multiplying everything by (V2+15)V2\r \n" ); document.write( "\n" ); document.write( "350V2+3V2^2+45V2=350V2+5250 \n" ); document.write( "3V2^2+45V2^2-5250=0\r \n" ); document.write( "\n" ); document.write( "Solution is : V2=35mph\r \n" ); document.write( "\n" ); document.write( "V1=35+15=50mph\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |