The duration of a professor's class has continuous uniform distribution between 49.2 minutes and 55.5 minutes. If one class is randomly selected and the probability that the duration of the class is longer than a certain number of minutes is 0.582, then find the duration of the randomly selected class, i.e., if P(x > c) = 0.582, then find c, where c is the duration of the randomly selected class. Round your answer to one decimal places. minutes