I need help with part c, if i understand correctly intersection of w and c is 10/100, and s an b is also 10/100, however is the union also 20/100? or are they independent events and are p(a)+p(b)-p(a)p(b)?. YOur help would be greatly appreciated

Example Let the following table represent market conditions on 101] companies (Commodities 0, Technology T and Services 3') classify into W: performance above 2% and B: performance below 2%: C T S W 10 10 15 B 21] 35 10 a] Find the probability that a randomly selected commodity company is classied as W. b] Find the probability that a randomly selected company is in commodities and it is classied as W. c) Find P{{W Fl 0) LJ (3 3]) and P(W)