A Walk In The Bush

 The Problem:

A group of walkers set off for a hike along a cross-country trail, returning by the same route.

They start at 10.00am and get back at 4.00pm, having been up and down hills and along some flat ground too.

Their speed along the flat is 4 km/hr; they can manage 3 km/hr up hills, and 6 km/hr down hills.


How far have they walked altogether?


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Last modified: June 18, 2007