document.write( "Question 885773: On a 900-mile trip between Palm Beach and Washington, a plane averaged 450 miles per hour. On the return trip, the plane averaged 300 miles per hour. What was the average rate of speed for tge round trip, in miles per hour? \n" ); document.write( "
Algebra.Com's Answer #535414 by Milagros(2)![]() ![]() ![]() You can put this solution on YOUR website! Distance = Rate x Time \r \n" ); document.write( "\n" ); document.write( "From Palm Beach to Washington: \n" ); document.write( "900 miles = 450 MPH x Time \n" ); document.write( "900/450 = 2 hrs\r \n" ); document.write( "\n" ); document.write( "From Washington back to Pam Beach: \n" ); document.write( "900 miles = 300 MPH x Time \n" ); document.write( "900/300 = 3 hrs\r \n" ); document.write( "\n" ); document.write( "Total distance = 1800 miles (900 x 2) \n" ); document.write( "Total time = 5 hours (2 hrs there, 3 hrs back)\r \n" ); document.write( "\n" ); document.write( "So... \r \n" ); document.write( "\n" ); document.write( "1800/5 = 360 MPH \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |