正确答案:B #{6{TFx\
答案解析:甲、乙、丙三种产品的边际贡献率分别为: hE &xE;
甲:[(30-20)/30] ×100%=33.33% Ve8=b0&Y#j
乙:[(25-15)/25] ×100%=40% 3>3 Kwc~E
丙:[(22-11)/22] ×100%=50% 99]R$eT8
各产品的销售比重为: 3Lfqdqj
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% ):P?
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% -r!. 9q
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% 2ElJbN#
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。