正确答案:B -L 'K
答案解析:甲、乙、丙三种产品的边际贡献率分别为: T4}?w
甲:[(30-20)/30] ×100%=33.33% $9i5<16
乙:[(25-15)/25] ×100%=40% 7}1Kafs
丙:[(22-11)/22] ×100%=50%
1707
各产品的销售比重为: qp_ `Fj:
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% oJ@PJvmR&a
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% &N7:k+E
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% v3JIUdU=P
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。