Let R and W be the events that a day is rainy and windy respectively. In a specific city, during a particular season, it is given that: the probability of a rainy day is equal to P(R) = 0.1. the probability of a rainy or windy day is equal to P(RUW)= 0.5. Find the probability that a certain day will not be windy, when it is given that it is not raining. Give your answer as a fraction or a decimal number correct to three decimal places. Probability :

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