document.write( "Question 1028644: Two boats start at the same place on a river and travel in opposite directions. The boat going downriver travels 4 miles per hour faster than the boat traveling upriver. If after 5 hours they are 470 miles apart, how fast was each boat traveling? \n" ); document.write( "
Algebra.Com's Answer #643798 by mananth(16946)\"\" \"About 
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Two boats start at the same place on a river and travel in opposite directions. The boat going downriver travels 4 miles per hour faster than the boat traveling upriver. If after 5 hours they are 470 miles apart, how fast was each boat traveling? \r
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\n" ); document.write( "\n" ); document.write( "upstream boat speed in still water =x
\n" ); document.write( "downstream boat in still water = x+4\r
\n" ); document.write( "\n" ); document.write( "The resultant speed will be 2x+4
\n" ); document.write( "Since both are travelling away from each other the effective speed will also be 2x+4\r
\n" ); document.write( "\n" ); document.write( "t=d/r\r
\n" ); document.write( "\n" ); document.write( "5= 470/(2x+4)\r
\n" ); document.write( "\n" ); document.write( "10x+20=470
\n" ); document.write( "x+2=47
\n" ); document.write( "x=45 \r
\n" ); document.write( "\n" ); document.write( "45mph & 49mph are the speeds \r
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