Use the following to answer the question(s) below.
A publishing company conducted a survey of its readership and found that 60% subscribed to Food & Wine, 30% subscribed to Wine Spectator, and 25% subscribed to both.
-The probability that a reader subscribes to Food & Wine or Wine Spectator is
A) 0.90.
B) 0.65.
C) 0.25.
D) 0.50.
E) 0.85.

Question

Quizplus · Accepted Answer

The probability of subscribing to Food & Wine OR Wine Spectator can be found by adding the individual probabilities of subscribing to each magazine and then subtracting the probability of subscribing to both, since those subscribers were counted twice. 
P(Food & Wine OR Wine Spectator) = P(Food & Wine) + P(Wine Spectator) - P(Food & Wine and Wine Spectator)
P(Food & Wine OR Wine Spectator) = 0.60 + 0.30 - 0.25
P(Food & Wine OR Wine Spectator) = 0.65

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