SOLUTION: A certain retail establishment accepts either the American Express or the VISA credit card. A total of 22 percent of its customers carry an American Express card, 58 percent carry

Question 1190754: A certain retail establishment accepts either the American Express or the VISA credit card. A
total of 22 percent of its customers carry an American Express card, 58 percent carry a VISA credit card, and 14 percent carry both. What is the probability that a customer will have at least
one of these cards?
Answer by ikleyn(52809) (Show Source): You can put this solution on YOUR website!
.
A certain retail establishment accepts either the American Express or the VISA credit card. A
total of 22 percent of its customers carry an American Express card, 58 percent carry a VISA
credit card, and 14 percent carry both. What is the probability that a customer will have at least
one of these cards?
~~~~~~~~~~~~~~~~~~~~~

Apply a standard formula for the probability of a union


    P(American Express or Visa) = P(American Express) + P(Visa) - P(both)    

or

    P(American Express or Visa) = 22% + 58% - 14% = 66%.      ANSWER

Solved.

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