document.write( "Question 341591: Pls help me solve this problem it's the only problem that I wasn't able to solve. Here it is: A train leaves new york city going west. An express going 20 mph faster leaves new york city 2 hours later on the same track going west. 6 hours later, the express hits the slower train. Find their speeds when the express hits the slower train. Thank you very much in advance! \n" ); document.write( "
Algebra.Com's Answer #244602 by scott8148(6628) You can put this solution on YOUR website! when the collision occurs ; the train had been traveling for 8 hrs , and the express had been traveling for 6 hrs \n" ); document.write( "___ when they collide , they have both traveled the same distance \n" ); document.write( "___ (rate) * (time) = distance\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "let x=\"rate of train\" , so x+20=\"rate of express\"\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "8(x) = 6(x + 20)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "8x = 6x + 120 ___ 2x = 120 ___ x = 60 \n" ); document.write( " |