hi please help me out

A small town is located in a particularly windy region of New Zealand. On any given day, the forecasted wind speed is uniformly distributed between 20 and 45 km/hr. On any day when the wind speed is forecasted to be greater than 28.7 km/hr, a weather warning for extreme wind is broadcasted on the news. Assume that the forecasted wind speeds are independent from day to day. Over the next 5 days, find the probability that a weather warning for extreme wind is broadcast on the news on less than 3 days