正确答案:B _%Jqyc"-
答案解析:甲、乙、丙三种产品的边际贡献率分别为: ,zO!`|I
甲:[(30-20)/30] ×100%=33.33% b1_HDC(
乙:[(25-15)/25] ×100%=40% dZ_Hj X7
丙:[(22-11)/22] ×100%=50% 4R.rSsAH
各产品的销售比重为: NKh 8'=S
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% gLU #\d]
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% o AvX(
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% A=Dzd/CUO
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。