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People get caffeine from a variety of sources: coffee, tea and caffeine soda. Suppose that among adults, 55% drink coffee, 25% drink tea, and 45% drink soda. Furthermore, 15% drink coffee and tea, 25% drink coffee and soda, 5% drink tea exclusively, and 5% drink all three beverage types.


Solve for the following:

  1. What percent of adults drink only coffee?
  2. What percent of adults drink only soda?
  3. What percent of adults drink none of the beverage types?

Verified Answer :

Thank you for posting your question here at brainly, I hope the answer will help. Below are the answer:

1. What percent of adults drink only coffee? - 20% 
2. What percent of adults drink only soda? - 15% 
3. What percent of adults drink none of the beverage types? - 20% 

nobillionaireNobley

1.) % only coffee = 55 - (15 - 5) - (25 - 5) - 5 = 55 - 10 - 20 - 5 = 20%

2.) % only soda = 45 - (25 - 5) - 5 = 45 - 20 - 5 = 20%

3.) % non of the beverage types = 100 - 20 - 20 - 5 - 10 - 20 - 5 = 20%

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