题目

Two men, both seriously ill, were in the same hospital room. One man was allowed to   26   up in his bed for an hour each afternoon. His bed was   27   the room’s only window. The other man on the other side of the room had to   28   all his time lying on his back in bed. Every afternoon when the man by the window could sit up he 29  pass the time by describing to his  30  all the things  he could see outside the window. “The window overlooked(俯瞰) a   31   with a lovely lake. Ducks and swans played on the water 32  children sailed their model boats. Young 某中学九年级1班同学积极响应“阳光体育工程”的号召，利用课外活动时间积极参加体育锻炼，每位同学从长跑、篮球、铅球、立定跳远中选一项进行训练，训练前后都进行了测试．现将项目选择情况及训练后篮球定时定点投篮测试成绩整理后作出如下统计图表． 请你根据图表中的信息回答下列问题： （1）求选择长跑训练的人数占全班人数的百分比机该班学生的总人数； （2）求训练后篮球定时定点投篮人均进球数； （3）根据测试资料，训练后篮球定时定点投篮的人均进球数比训练之前人均进球数增加25%，请求出参加训练之前的人均进球数。