document.write( "Question 843865: While driving on the highway, Dave averages 60 miles per hour. In the city, he averages 30 miles per hour. On a trip to his grandmother's house, Dave drove 235 hours on the highway and 115 hours in the city. What was Dave's average speed for the entire trip, in miles per hour? Round to the nearest tenth. \n" ); document.write( "
Algebra.Com's Answer #508386 by josgarithmetic(39626) ![]() You can put this solution on YOUR website! _______________speed__________time_____________distance \n" ); document.write( "Highway________60_____________235______________ \n" ); document.write( "City___________30_____________115______________\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "What was average speed for the whole trip?\r \n" ); document.write( "\n" ); document.write( "R*T=D, uniform rate equation for travel.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "_______________speed__________time_____________distance(MILES) \n" ); document.write( "Highway________60_____________235______________ \n" ); document.write( "City___________30_____________115______________ \n" ); document.write( "TOTALS________________________350______________17550\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Using the totals obtained, the average speed was \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "- \n" ); document.write( "That would be an incredible drive to take to visit his mother. That 17550 miles trip is about |