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Bill takes the commuter train to work every day. during the morning commute, a train arrives every 25 min. if bill arrives at the station at a random time for the morning commute, what is the probability that he will have to wait at least 5 min for a train?

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Kalahira
The probability is 80% or .8. Bill could have to wait anywhere from 0-25 minutes, and only 5 of those would mean he waits less than 5 minutes. So 20/25 = .8 = 80%.

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