A survey found that 43% of people in Townsville own a desktop computer, 25% own a laptop and 8% own both a desktop and a laptop. If one person from Townsville was selected at random, then the probability that the person owns either a desktop or a laptop is
Let D be event of owning a desktop computer and L be a laptop. The Probability of D or L = P(D or L) = P(D) + P(L) - P(D and L) = .43 + .25 - .08 = .60 = 60%.
