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The florida tourist commission selected a random sample of 200 people that attended one or more concerts during the first weekend in april of 2010. the survey revealed that 120 concert goers went to orlampa skydome and 100 went to the bithlo megaplex. calculate the probability that a selected concert goer during the same weekend next year will go to either the orlampa skydome or the bithlo megaplex

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meerkat18
One thing to note in problems dealing with probability is to find the context clues. If the word 'or' is mentioned, you'll have to add up the probabilities. If the word 'and' is mentioned, you multiply their probabilities. Since the problem here says either the orl ampa skydome or the bithlo megaplex, then,

Probability = 120/200 + 100/200 = 11/10