依题,设上个月价卖出x件,则乙卖出1000-x件
可列出 (1+50%)x+(1-10%)(1000-x)=1000(1-4%)
1.5x+900-0.9x =960
900+0.6x =960
0.6x =60
x =100
1000-x =900
∴上个月甲商品卖出100件,
乙商品卖出900件.
依题,设上个月价卖出x件,则乙卖出1000-x件
可列出 (1+50%)x+(1-10%)(1000-x)=1000(1-4%)
1.5x+900-0.9x =960
900+0.6x =960
0.6x =60
x =100
1000-x =900
∴上个月甲商品卖出100件,
乙商品卖出900件.