Question 1163447
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Here is a very different way to solve this kind of problem.<br>
The distances both directions are the same; the ratio of the two speeds is 1:3.<br>
That means the ratio of times at the two speeds is 3:1.<br>
Since the total time is 1 hour, that means she spent 3/4 of an hour at the lower speed and 1/4 of an hour at the higher speed.<br>
3/4 of an hour at 4mph means she traveled (3/4)*4 = 3 miles; 1/4 of an hour at 12mph means she traveled (1/4)*12 = 3 miles.<br>
ANSWER: 3 miles to her friend's house.<br>