document.write( "Question 941197: The speed of a stream is 6 mph. If a boat travels 88 miles downstream in the same time that it takes to travel 44 miles upstream, what is the speed of the boat in still water? \n" ); document.write( "
Algebra.Com's Answer #573739 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! The speed of a stream is 6 mph. If a boat travels 88 miles downstream in the same time that it takes to travel 44 miles upstream, what is the speed of the boat in still water? \n" ); document.write( "*** \n" ); document.write( "let x=speed of the boat in still water. \n" ); document.write( "(x+6)=speed of the boat downstream. \n" ); document.write( "(x-6)=speed of the boat upstream. \n" ); document.write( "travel time=distance/speed (same for both upstream and downstream) \n" ); document.write( ".. \n" ); document.write( " \n" ); document.write( "cross-multiply) \n" ); document.write( "88(x-6)=44(x+6) \n" ); document.write( "88x-528=44x+264 \n" ); document.write( "44x=792 \n" ); document.write( "x=18 \n" ); document.write( "speed of the boat in still water=18 mph \n" ); document.write( " |