A rep hockey team has two goalies. Goalie A has a save percentage of 0.92 and Goalie B has a save percentage of 0.89. If goalie A plays 75 percent of the games and goalie B plays 25 percent of the games then:

a) Determine the probability that a save has been made by either goalie A or goalie B

b) If a save has been made, what is the probability that is was goalie A?

c) If a goal was let in, what is the probability it was goalie B?