Five hundred employees were selected from a city's large private companies, and they were asked whether or not they have any retirement benefits provided by their companies. Based on this information, the following two-way classification table was prepared. Gender Have retirement benefits Yes No Men 225 75 Women 150 50 If one employee is selected at random from these 500 employees, find the probability that this Employee (a) has retirement benefits (b) is a woman given that she does not have a retirement benefits

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