正确答案:B c]n1':FT"
答案解析:甲、乙、丙三种产品的边际贡献率分别为: YA_c
N5p/@
甲:[(30-20)/30] ×100%=33.33% koZ*+VP=
乙:[(25-15)/25] ×100%=40% <oT^ A|JFj
丙:[(22-11)/22] ×100%=50% d\|?-hY`[
各产品的销售比重为: )f[
B6Y
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% 0uOkMuy<
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% K<SyC54
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% Vk
K
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。