What is the distance between towns A and B? Learn how to solve this mysterious problem--a similar problem was a question to quality for the US Math Olympiad!

Sources
Qbyte Nick's mathematical puzzle, number 75
http://www.qbyte.org/puzzles/p075s.html
AoPS 2017 AMC 10A, problem 9 (US Olympiad qualifying test)
https://artofproblemsolving.co....m/wiki/index.php/201

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