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Multiple ChoiceOAn ad agency is developing a campaign to promote a business opening in a...

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Basic Math

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Multiple ChoiceOAn ad agency is developing a campaign to promote a business opening in a newmall development. To develop an appropriate mailing list, they decide topurchase lists of credit card holders from MasterCard and American Express.Combining the lists, they find the following: 40 percent of the people on the listhave only a MasterCard and 10 percent have only an American Express card.Another 20 percent hold both MasterCard and American Express. Finally, 30percent of those on the list have neither card. Suppose a person on the list isknown to have a MasterCard. What is the probability that person also has anAmerican Express card?OO.20.33.18.70Help.90Save & ExitSubmit

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