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in a promotion at a local diner ever twelfth customer will get a free hamburger and every ninth customer will get a free milkshake which customer will be first to get a free sandwich and a free drink
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in a promotion at a local diner ever twelfth customer will get a free hamburger and every ninth customer will get a free milkshake which customer will be first to get a free sandwich and a free drink

User Ozma
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1 Answer

3 votes
The 36th customer

The common denominator between 9 and 12 would be 36

9 th customer -> 18th customer -> 27th customer - > 36 th

12th -> 24th -> 36th
User Zeekvfu
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8.0k points
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