document.write( "Question 536948: A motorboat traveling with the current went 72 miles in 4 hours. Going against the current, it tool 6 hours to travel the same distance. Find the rate of the boat in calm water and the rate of the current. I came up with 15 mph for the rate of the boat and 3 mph for the rate of the current. Can someone tell me if these are correct? \n" ); document.write( "
Algebra.Com's Answer #352663 by lmeeks54(111)![]() ![]() You can put this solution on YOUR website! You've got it. 72 miles in 4 hours is 18 mph going downstream. The same 72 miles upstream takes 6 hours, that's 12 mph. If the boat's speed is constant and the current is constant, then you can assume the boat goes a constant 15 mph in calm water and is thus sped up 3 mph downstream and slowed down 3 mph upstream. \n" ); document.write( "... \n" ); document.write( "Great job, \n" ); document.write( "Lee \n" ); document.write( " |