Hard puzzle | if 6 + 8 = 12, 4 + 10 = 10, 12 + 20 = 60, then 24 + 50 = ?, #14

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[Brandonnutley]

Puzzle works better with a symbolic variable in place of the addition sign. Using common terms to present falsehood prevents many from understanding unnecessarily (especially for younger students, the problem of "make these 3 equations true to solve a 4th" is different than if "presented truths" then solve equation)