A traveling merchant has valuable items to sell, but he is not always in town. In fact, whenever he is in town today, there is a probability of 0.8 that he will not be in town tomorrow. Whenever he is not in town today, there is a probability of 0.7 that he will still not be in town tomorrow, either. Today, he is not in town. Compute the probability the merchant will be in town on at least one of the next 3 days.

Hint: Find the probability he will not be in town at all the next 3 days, then use the complement rule.