A study showed that in? 1990, 47?% of all those involved in a fatal car crash wore seat belts. Of those in a fatal crash who wore seat? belts,44?% were injured and 27?% were killed. For those not wearing seat? belts, the comparable figures were 42?% and 51?%, respectively.
Find the probability that a randomly selected person who was unharmed in a fatal crash was not wearing a seat belt.