设甲为X 乙为Y则：
X／Y＝80／100
（X＋70）／（Y－70）＝2／3
解方程既可得到答案
甲厂人数是乙厂人数的80/100,从乙厂调70人到甲厂,则乙厂是甲厂的2/3,求两厂总共多少人?
甲厂人数是乙厂人数的80/100,从乙厂调70人到甲厂,则乙厂是甲厂的2/3,求两厂总共多少人?
数学人气：562 ℃时间：2019-11-23 06:46:25
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