设女生x人,男生y人
按全班的总分相等可得;
87x+79y=82(x+y)
5x=3y y：x=5：3
男：女为5：3
一次测试,全班平均分是82分,男生平均分是79分,女生平均分是87分,求这个班男生与女生人数的比
一次测试,全班平均分是82分,男生平均分是79分,女生平均分是87分,求这个班男生与女生人数的比
数学人气：293 ℃时间：2019-08-20 17:39:06
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