Question 1131896
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The ratio of the two speeds is 10:6, or 5:3.  Since the distances are the same, the ratio of times is then 3:5.  So he spent 3/8 of the time on the trip going out and 5/8 of the time returning.<br>
The total time is 1 hour 36 minutes, or 1 3/5 hours, or 8/5 hours.<br>
His time returning was then 5/8 of 8/5 hours, or 1 hour.<br>
His rate returning was 6mph; 6mph for 1 hour makes the return trip 6 miles.<br>
So the total jog was 12 miles.