正确答案:B ='eQh\T)
答案解析:甲、乙、丙三种产品的边际贡献率分别为: 9ys[xOh
WM
甲:[(30-20)/30] ×100%=33.33% %7TG>tc
乙:[(25-15)/25] ×100%=40% /6N!$*8
丙:[(22-11)/22] ×100%=50% %
kBrxf
各产品的销售比重为: M _Lj5`
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% JKYl
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% <3k9 y^0
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% I%{D5.du
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。