正确答案:B X5'foFE'
答案解析:甲、乙、丙三种产品的边际贡献率分别为: @~xNax&^
甲:[(30-20)/30] ×100%=33.33% ^HQg$}=
乙:[(25-15)/25] ×100%=40% &p`RK
D
丙:[(22-11)/22] ×100%=50% u:NSPAD)
各产品的销售比重为: K6{{\r
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% yiiYq(\{
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% /c8F]fkZ=
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% 0k0y'1SL
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。