英语翻译

问题描述:

英语翻译
In a 20-game season a certain basketball player scores at least 15 points in 60% of the first 10 games,40% of the next 5 games,and 20% in the last 5 games.In what percent of all 20 games did this player score less than 15 points?

在一个有20场比赛的赛季中,一个篮球运动员在前10场比赛中至少能得15分的概率为60%,在接下来的5场比赛中至少能得15分的概率为40%,在最后5场比赛中至少能得15分的概率为20%,问这位运动员在整个20场比赛里得分少于15分的概率是多少?