Question

At a coffee shop 55% of customers buy a coffee drink, 30% buy food, and 25% buy both coffee and food. What is the probability that a randomly chosen customer by either a coffee drink or food?

Answer 1

85%

Explanation:

with OR (as opposed to AND), you add probabilitites

with AND, you multiply them

P(coffee OR food) = .55 + .30 = .85