Question: John runs a computer software store. He counted 120 people who walked by his store in a day, 50 of whom came into the store.

John runs a computer software store. He counted 120 people who walked by his store in a day, 50 of whom came into the store. Of the 50, only 21 bought something in the store. Estimate the probability that a person who walks by the store will come in and buy something. Round your answer to the nearest hundredth.

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