Sunday Times Teaser 2799 – Desert Patrol
by H. Bradley & C. Higgins
Published: 15 May 2016 (link)
Pat is at Base Camp in the desert. There is enough fuel at the base for his vehicle to travel 420 miles, but the vehicle can hold (in its tank and in cans) at most enough fuel for 105 miles. On any journey he can leave some fuel in cans at any point and then pick up some or all of it whenever he passes in future. He has worked out that there is just enough fuel for him to reach the Main Camp.
How far is it between the two camps?