document.write( "Question 167461: Dick's motorboat can make an average 8 miles an hour. One day he sets out for a trip, only to have the motor break down. Dick rows back at 2 miles an hour. When he reaches his dock, he finds that he has been gone for 5 hours. How far has he rowed? \n" ); document.write( "
Algebra.Com's Answer #123398 by ankor@dixie-net.com(22740) You can put this solution on YOUR website! Dick's motorboat can make an average 8 miles an hour. One day he sets out for a \n" ); document.write( " trip, only to have the motor break down. Dick rows back at 2 miles an hour. \n" ); document.write( " When he reaches his dock, he finds that he has been gone for 5 hours. \n" ); document.write( " How far has he rowed? \n" ); document.write( ": \n" ); document.write( "Let d = distance rowed (same as by motor) \n" ); document.write( "; \n" ); document.write( "Write a time equation. Time = \n" ); document.write( ": \n" ); document.write( "Motor time + rowing time = 5 hrs \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "Multiply equation by 8 to get rid of the denominators, results: \n" ); document.write( "d + 4d = 8(5) \n" ); document.write( ": \n" ); document.write( "5d = 40 \n" ); document.write( "d = \n" ); document.write( "d = 8 miles rowed \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution in our equation \n" ); document.write( " |