There is 0.3 probability that a group of insured motorists have an accident in a decade. If there are 640 insured motorists, what is the mean number of accidents in a decade?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?