SOLUTION: in a burger chain, customers who use mustard are 80% customers whwo use ketchup are 65% what is the probability that customers comming in the burger shop will use mustard, ketchup
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Question 138929: in a burger chain, customers who use mustard are 80% customers whwo use ketchup are 65% what is the probability that customers comming in the burger shop will use mustard, ketchup or both? Answer by stanbon(75887) (Show Source):
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