document.write( "Question 1164958: qmy drove to a friends house at a rate of 45mph. She returned by the same route at a rate of 50mph. The driving time for the round trip was 4hrs. what is the total distance amy travelled. \n" ); document.write( "
Algebra.Com's Answer #789394 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! x hours to get there \n" ); document.write( "4-x hours to get back \n" ); document.write( "distance there is 45x miles \n" ); document.write( "distance back is 50(4-x) miles \n" ); document.write( "Those are equal \n" ); document.write( "so 45x=200-50x \n" ); document.write( "95x=200 \n" ); document.write( "x=2.105 hours to get there @45 mph=94.73 miles (rounded at end) \n" ); document.write( "4-x=1.895 hours to get back @50 mph=94.73 miles \n" ); document.write( "distance traveled was 189.46 miles \n" ); document.write( " |