Alice is riding the train to her job in Paris, France. She accidentally purchased a ticket for zone 4, but she is travelling to zone 5. She has decided to risk it and stay on the train until zone 5 with the incorrect ticket. If the
transit authorities check tickets on the train, she will have to pay a fine.
Alice estimates that there is a 5% chance that the transit authorities will check tickets. The fine for having the
wrong ticket is 300 euros. The ticket she purchased cost her 5 euros.
Find the total expected cost of Alice's train ride.
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euros
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