document.write( "Question 481427: gladys can paddle her banca 24 km downstream in three hours less time than she can paddle the same distance upstream.if the current is 2 km per hour,hoe fast can gladys paddle her banca in the still water? \n" ); document.write( "
Algebra.Com's Answer #329655 by mathstutor494(120)![]() ![]() You can put this solution on YOUR website! Let still water paddle speed : x km\r \n" ); document.write( "\n" ); document.write( "Since stream current is 2 km per hour, therefore \n" ); document.write( "upstream speed = x-2 and downstream speed = x+2\r \n" ); document.write( "\n" ); document.write( "Time taken : distance/speed\r \n" ); document.write( "\n" ); document.write( "Upstream : 24/(x-2) \n" ); document.write( "Downstream : 24/(x+2)\r \n" ); document.write( "\n" ); document.write( "The problem states that it takes three hours less time to paddle same distance downstream than same distance upstream.\r \n" ); document.write( "\n" ); document.write( "Accordingly\r \n" ); document.write( "\n" ); document.write( "24/(x-2) - 24/(x+2)=3\r \n" ); document.write( "\n" ); document.write( "Solving above for x results in x=6\r \n" ); document.write( "\n" ); document.write( "Ans : still water paddle speed : 6 km\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |