Mathematics, 09.09.2020 22:01 snowysophia7987

Mary and Nancy work at a calculator producing factory. It is their job to inspect the calculators to make sure that they are working, before the calculators are shipped to stores. If Mary inspects every twelfth calculator and Nancy inspects every ninth calculator, which calculator will be the first that they both inspect? GCF or LCM? (circle one)
At least 2 clues that helped me decide were: Here is my work and my solution:

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