document.write( "Question 153441: Logan & Madison went on a 7 hour trip. Together they drove a total of 428.5 miles. Logan averaged 58 mph and Madison averaged 63 mph. How long did Madison drive? \n" ); document.write( "
Algebra.Com's Answer #112968 by orca(409) ![]() You can put this solution on YOUR website! Suppose Madison drove for t hours, then Logan drove for 7 - t hours. \n" ); document.write( "Madison drove for 63t miles. \n" ); document.write( "Logan drove for 58(7-t) miles \n" ); document.write( "The total was 63t + 58(7-t). \n" ); document.write( "As the total distance traveled is 428.5 miles, we have: \n" ); document.write( "63t + 58(7-t)=428.5 \n" ); document.write( "Solving for t, we have: \n" ); document.write( "63t + 406 - 58t = 428.5 \n" ); document.write( "5t = 22.5 \n" ); document.write( "t = 22.5/5 \n" ); document.write( "t = 4.5 \n" ); document.write( "So Madison drove for 4.5 hours. \n" ); document.write( " \n" ); document.write( " |