The probabilities of the top-selling menu item in four towns' restaurants being different types of vegetarian and nonvegetarian sandwiches are given in the table. if the restaurant in town 4 has a nonvegetarian sandwich as its top-selling menu item, what is the probability that it is a ham sandwich?
town vegetable sandwich nonvegetarian chicken sandwich nonvegetarian ham sandwich nonvegetarian bacon sandwich nonvegetarian tuna sandwich
town 1 6.63% 5.42% 7.05% 6.19% 5.91%
town 2 6.84% 7.11% 6.89% 5.69% 6.58%
town 3 5.97% 6.63% 5.72% 5.86% 5.79%
town 4 6.54% 5.86% 6.24% 6.24% 6.33%
total 6.24% 5.77% 6.03% 5.92% 6.27%