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At a breakfast buffet, 89 people chose coffee for their beverage and 81 people chose juice for their beverage. 18 people chose both juice and coffee. If each person chose at least one of these beverages, then, how many people visited the buffet?

At a breakfast buffet, 89 people chose coffee for their beverage and 81 people chose juice for their beverage. 18 people chose both juice and coffee. If each person chose at least one of these beverages, then, how many people visited the buffet? Correct Answer 152

Given:

People chose coffee = 89

People chose Juice = 81

People chose Coffee and Juice = 18

Concept:

Venn diagram

Calculation:

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People chose coffee = 89

People chose Juice = 81

People chose Coffee and Juice = 18

People who chose only coffee = (89 – 18) = 71

People who chose only Juice = (81 – 18) = 63

∴ The number of person who visited buffet = (71 + 63 + 18) = 152

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