Question: Inventory forty percent of a company's total output consists of baseballs, 30% consists of softballs, and 10% consists of tennis balls. Its only remaining product is handballs. If we place balls in a box in the same ratios as the company's output and select a ball at random from the box, what is the probability that
(a) the ball is a baseball?
(b) the ball is a tennis ball?
(c) the ball is not a softball?
(d) the ball is a handball?