Question 657575
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The solution from tutor @mananth assumes the pack of elephants stops to wait for the lone elephant to catch up, so that the lone elephant catches up to the pack at a rate of 10mph.<br>
More likely, the pack kept moving at 6mph, so the rate at which the lone elephant catches up is 10-6 = 4mph.<br>
ANSWERS:<br>
The lone elephant ran for 5 minutes to catch up; 5 minutes is 1/12 of an hour.
The lone elephant ran for 1/12 of an hour at 10mph to catch up; the distance it ran to catch up was 10*(1/12) = 5/6 miles.<br>