document.write( "Question 831798: Tinh can row at a rate of 6 mph in still water. It takes her 2 hours to row upstream from a dock to a park. She then rows back to the dock, and it only takes 40 minutes. What is the speed of the river current? \n" ); document.write( "
Algebra.Com's Answer #501651 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! c = speed of the current.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "_______________speed_______________time_____________distance \n" ); document.write( "UP_____________6-c_________________2__________________d \n" ); document.write( "DOWN___________6+c_________________2/3________________d\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Same distance each way. Rate*Time gives the distance, and both expressions must be equal. \n" ); document.write( "Forty minutes is the same as (2/3) hour. We can keep all in miles and hours.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "Simplify and solve for c.\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( "RESULT: |