document.write( "Question 806728: mary drove 138 miles one way to visit her mother which took 2 1/2 hours.The return trip took 3 1/4 hours due to more traffic.what was her average speed for the entire trip? \n" ); document.write( "
Algebra.Com's Answer #485982 by richwmiller(17219) You can put this solution on YOUR website! 276/(2.5+3.25)=276/5.75 =48 mph average for trip \n" ); document.write( "55.2 to \n" ); document.write( "42.46 return \n" ); document.write( " |