survey asks 160 people "What beverage do you drink in the morning?", and offers choices: Coffee only

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.1: Sets
Problem 87E
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Question

A survey asks 160 people "What beverage do you drink in the morning?", and offers choices:

  • Coffee only
  • Tea only
  • Both tea and coffee
  • Neither tea nor coffee

Suppose 40 report tea only, 36 report coffee only, and 64 report both.

How many people drink tea in the morning? 

How many people drink coffee in the morning?

How many people drink neither tea nor coffee?

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