Question 1202281
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Homer drove as fast as he could to get 60 miles ahead of Mae. If Homer drove at 17 miles per hour 
and accomplished his goal 20 hours after they both began, how fast did Mae drive?
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Homer traveled 20 hours at the rate of 17 miles per hour; so, he traveled

    20*17 = 340 miles.


When Homer completed his travel, Mae was 60 miles from the finish.


So, traveling 20 hours, Mae covered the distance of 340-60 = 280 miles.


Hence, Mae's average rate was  {{{280/20}}} = 14 miles per hour.    <U>ANSWER</U>
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It is simple problem to solve it MENTALLY.