document.write( "Question 743218: Teri drove an average of 52 miles per hour on a 5-hour trip. During the first 3 hours, she drove 60 miles per hour. What was her average speed for the last 2 hours of the trip? \n" ); document.write( "
Algebra.Com's Answer #452804 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Teri drove an average of 52 miles per hour on a 5-hour trip. During the first 3 hours, she drove 60 miles per hour. What was her average speed for the last 2 hours of the trip? \n" ); document.write( "-------------------- \n" ); document.write( "Total distance: 5*52 = 260 miles \n" ); document.write( "--- \n" ); document.write( "1st 3 hrs: 3*60 = 180 miles \n" ); document.write( "---- \n" ); document.write( "Last 2 hrs: (260-180)/2 = 40 mph \n" ); document.write( "================================= \n" ); document.write( "cheers, \n" ); document.write( "Stan H. \n" ); document.write( "======================== \n" ); document.write( " |