A car repair firm employs three paint sprayers, Tomy, Dicky and Harry. Tomy is responsible for painting 25 % of all the cars produced, Dicky for 35 % and Harry for the remaining 40 %. On the basis of frequent quality inspections it is discovered that, on average, 5 % of the car sprayed by Tomy fall below the minimum standard, while for Dicky is 8 % and for Harry 10 %. If a car is selected at random is judged to be sub-standard. What is the probability that it was sprayed by Harry? P ( H/B ) = b. If a car selected at random is judged to be standard, What is the probability that it was sprayed by Tomy or Dicky