document.write( "Question 273063: It took a boat 5 hours to travel upstream and back. The current was 3mi/hr and the return trip took 1 hour. What is the speed of the boat in still water? \n" ); document.write( "
Algebra.Com's Answer #199537 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! It took a boat 5 hours to travel upstream and back. The current was 3mi/hr and the return trip took 1 hour. What is the speed of the boat in still water? \n" ); document.write( "------------------------------------ \n" ); document.write( "Upstream DATA: \n" ); document.write( "time = 4 hrs ; rate = b-3 mph ; distance = rt = 4(b-3) miles \n" ); document.write( "------------------------- \n" ); document.write( "Downstream DATA: \n" ); document.write( "time = 1 hr ; rate = b+3 mph ; distance = rt = b+3 miles \n" ); document.write( "--------------------------------------------------------------- \n" ); document.write( "Equation: \n" ); document.write( "distance = distance: \n" ); document.write( "4(b-3) = b+3 \n" ); document.write( "4b-12 = b+3 \n" ); document.write( "3b = 15 \n" ); document.write( "b = 5 mph (boat speed in still water) \n" ); document.write( "================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |