正确答案:B XSv)=]{
答案解析:甲、乙、丙三种产品的边际贡献率分别为: zfBaB0 P
甲:[(30-20)/30] ×100%=33.33% PAcbC|y
乙:[(25-15)/25] ×100%=40% mD]^a;U[X
丙:[(22-11)/22] ×100%=50% 1k:
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各产品的销售比重为: 'y?
HF@NJ
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% vp_$Ft-R
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% Fb^Ae6/i
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% GQvJj4LJp
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。