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Challenge 99


The Pancho Villa Trip

Difficulty level:

Pancho Villa travels from Acapulco to Guadalajara, traveling by road at a constant speed. Passes a milestone (distance marker from Acapulco) that contains two digits. An hour later, it passes another milestone, containing the same two digits, but in reverse order. An hour later, it passes a third frame, containing the same digits, in the order you saw them in the first frame, but separated by a zero. How fast does Pancho Villa travel?