document.write( "Question 306570: William drove 5 hours at the average speed of 54 miles an hour. For the first 2 hours, he drove 45 miles an hour. What was his average for the last 3 hours? \n" ); document.write( "
Algebra.Com's Answer #219425 by mananth(16946)![]() ![]() You can put this solution on YOUR website! William drove 5 hours at the average speed of 54 miles an hour. For the first 2 hours, he drove 45 miles an hour. What was his average for the last 3 hours?\r \n" ); document.write( "\n" ); document.write( "time driven = 5 hours\r \n" ); document.write( "\n" ); document.write( "54 miles / hour\r \n" ); document.write( "\n" ); document.write( "Distance traveled = 54 * 5= 270 miles\r \n" ); document.write( "\n" ); document.write( "2 hours @ 45 mph\r \n" ); document.write( "\n" ); document.write( "distance traveled = 90 miles\r \n" ); document.write( "\n" ); document.write( "270-90= 180 miles is the second leg distance \r \n" ); document.write( "\n" ); document.write( "180/3 = 60 mph \n" ); document.write( "Next 3 hours he drove at 60 mph\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |