正确答案:B AZnFOS
答案解析:甲、乙、丙三种产品的边际贡献率分别为: :V# B]:Z9
甲:[(30-20)/30] ×100%=33.33% ,9W!cD+0
乙:[(25-15)/25] ×100%=40% Ca3
{e1
丙:[(22-11)/22] ×100%=50% 1t7T\~+F
各产品的销售比重为: o'ZW
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% D\ P-|}
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% rR(\fX!dg
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% u9{Z*w3L7
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。