It is known from experience that in a certain industry 60
percent of all labor-management disputed are over wages, 15 percent
are over working conditions, and 25 percent are over fringe issues.
Also, 45 percent of the disputes over wages are resolved without
strikes, 70 percent of the disputed over working conditions are
resolved without strikes, and 40 percent of the disputes over
fringes are resolved without strikes. (a) What is the probability
that a labor-management dispute in this industry will be resolved
without a strike? (b) What is the probability that if there was a
strike, it was about fringe issues?
