document.write( "Question 176781: Mia's motorboat took 3 hours to make a trip downstream with a 6 mph current. the return trip against the came current took 5 hours. find the speed of the boat.
\n" );
document.write( "
\n" );
document.write( "please help me thank you! \n" );
document.write( "
Algebra.Com's Answer #131849 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Mia's motorboat took 3 hours to make a trip downstream with a 6 mph current. the return trip against the came current took 5 hours. find the speed of the boat.\r \n" ); document.write( "\n" ); document.write( "----------------- \n" ); document.write( "down Data: \n" ); document.write( "time = 3 hrs ; rate = (b+6) mph ; distance = rt = 3(r+6) miles \n" ); document.write( "-------------------- \n" ); document.write( "upstream DATA: \n" ); document.write( "time = 5 hrs ; rate = (b-6) mph ; distance = rt = 5(r-6) miles \n" ); document.write( "-------------------------------------------------------------- \n" ); document.write( "Equation: \n" ); document.write( "distance up = distance down \n" ); document.write( "5(b-6) = 3(b+6) \n" ); document.write( "5b - 30 = 3b + 18 \n" ); document.write( "2b = 48 \n" ); document.write( "b = 24 mph (speed of the boat in still water) \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |