document.write( "Question 642593: Wilma drove at an average speed of 50 mi/h from her home in Boston to visit her sister in Buffalo. She stayed in Buffalo 10 hours and, on the trip back, averaged 45 mi/h. She returned home 29 hours after leaving. How many miles is Buffalo from Boston? \n" ); document.write( "
Algebra.Com's Answer #404179 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Wilma drove at an average speed of 50 mi/h from her home in Boston to visit her sister in Buffalo. She stayed in Buffalo 10 hours and, on the trip back, averaged 45 mi/h. She returned home 29 hours after leaving. How many miles is Buffalo from Boston? \n" ); document.write( "----------- \n" ); document.write( "Avg speed for the round trip is 2*50*45/(50+45) = 900/19 mi/hr \n" ); document.write( "She drove 19 hours \n" ); document.write( "d = r*t = (900/19)*19 = 900 miles RT \n" ); document.write( "= 450 miles each way \n" ); document.write( " |