document.write( "Question 767529: A motorboat takes 3 hours to travel to it's destination with a current of 5 mph. The return trip against the same current takes 4 hours. How fast is the motorboat in still water? \n" ); document.write( "
Algebra.Com's Answer #467708 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! A motorboat takes 3 hours to travel to it's destination with a current of 5 mph. The return trip against the same current takes 4 hours. How fast is the motorboat in still water? \n" ); document.write( "*** \n" ); document.write( "let x=speed of motorboat in still water \n" ); document.write( "x+5=speed of motorboat with the current \n" ); document.write( "x-5=speed of motorboat against the current \n" ); document.write( "distance=speed*travel time \n" ); document.write( "3(x+5)=4(x-5) \n" ); document.write( "3x+15=4x-20 \n" ); document.write( "x=35 \n" ); document.write( "How fast is the motorboat in still water? 35 mph \n" ); document.write( " |