document.write( "Question 908761: a train left detroit and traveled west at 70 km/h. two hours later, another train left detroit and traveled east at 90 km/h. how many hours had the first train traveled when they were 1430 km apart?\r
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document.write( "please show the steps also! \n" );
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Algebra.Com's Answer #551304 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! a train left detroit and traveled west at 70 km/h. two hours later, another train left detroit and traveled east at 90 km/h. how many hours had the first train traveled when they were 1430 km apart? \n" ); document.write( "*** \n" ); document.write( "let x=travel time of 2nd train \n" ); document.write( "x+2=travel time of 1st train \n" ); document.write( "distance=speed*travel time \n" ); document.write( "90x+70(x+2)=1430 \n" ); document.write( "90x+70x+140=1430 \n" ); document.write( "160x=1290 \n" ); document.write( "x=8.0625 \n" ); document.write( "how many hours had the first train traveled when they were 1430 km apart? 10.0625 \n" ); document.write( " |