document.write( "Question 360063: A boat travels up river in 1.2 hours and down river in .9 hours. The boat travels 5 mph faster down river than up river. What speed is the boat traveling up and down river? \n" ); document.write( "
Algebra.Com's Answer #256904 by mananth(16946)![]() ![]() You can put this solution on YOUR website! let upstream speed be x \n" ); document.write( "downstream speed = x+5 \n" ); document.write( ".. \n" ); document.write( "upstream time = 1.2 hours \n" ); document.write( "downstream time = 0.9 hours \n" ); document.write( ".. \n" ); document.write( "1.2x=0.9(x+5) \n" ); document.write( "1.2x=0.9x+4.5 \n" ); document.write( "0.3x=4.5 \n" ); document.write( "x=4.5/0.3 \n" ); document.write( "x=15 mph upstream speed \n" ); document.write( "20 mph downstream speed \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |