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Puzzle #242: Can you improve my odds of buying the cheapest fuel?

Can you solve this week’s arithmetical puzzle, Filling up in Pumpstown?

4 October 2023

#242 Filling up in Pumpstown

Set by Rob Eastaway

When I drive south through Pumpstown, I always need to fill up the car at one of the three gas stations (North, Mid or South) that are strung along the freeway that passes through the town.

Of course, I want to get the best possible deal: there is nothing worse than filling the tank only to find I would have got cheaper fuel if I had waited until the next station. It is a busy road and there is no turning back, so if I haven’t filled up before getting to…

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