男生:x,女生:y
x:y=15:14
后来
(x+4):(y-8)=7:6
解得:x=150,y=140
现在男生:150+4,女生:140-8
某小学男女生人数比是15:14,后来转来4名男生,转走了8名女生们男女生人数之比变成7:6,那么全校现有多少
某小学男女生人数比是15:14,后来转来4名男生,转走了8名女生们男女生人数之比变成7:6,那么全校现有多少
数学人气:106 ℃时间:2019-11-01 06:41:35
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