document.write( "Question 1053153: A sportsman can run 510 feet down a sand dune in 30 seconds. He can run 165 feet up the sand dune in 55 seconds. How fast can the sportsman run in the sand on level ground? \n" ); document.write( "
Algebra.Com's Answer #668442 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! A sportsman can run 510 feet down a sand dune in 30 seconds. He can run 165 feet up the sand dune in 55 seconds. How fast can the sportsman run in the sand on level ground? \n" ); document.write( "------------------- \n" ); document.write( "No way to know. \n" ); document.write( "There's no reason to assume running on level ground is the average of up and down the hill. \n" ); document.write( " \n" ); document.write( " |