Question

Sloan the sloth crawls at 100 meters per hour when crawling uphill, 120 meters per hour when crawling across flat ground, and 150 meters per hour when crawling downhill. One day, Sloan crawls across the forest floor from a tree stump to a spring, and then takes the same route in reverse to return to the tree stump. What was Sloan's average speed during the entire round trip?

Answer 1

Explanation:

It is not the problem to go either up or down. I think the problem is to pick one of the three speeds. Since he is on flat ground, his speed there and back is going to be 120 m/hour.

He's not on the tree stump when he starts: the stream might be a little lower than the flat ground, but we don't know by how much. I'm going to guess that it doesn't matter.

It's not a very logical question.