document.write( "Question 410401: A train travels 600 mi. in the same time that a truck travels 520 mi. Find the speed of each vehicle if the trains average speed is 8 mph. faster than the truck's.
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Algebra.Com's Answer #288592 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! t = d / r ___ the times are equal\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "600 / (r + 8) = 520 / r\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\"cross\" multiplying ___ 600r = 520r + 8(520)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "80r = 8(520) ___ r = 52\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "r + 8 = 60 \n" ); document.write( " |