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)\"\" \"About 
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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.
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