正确答案:B m_TZY_;
答案解析:甲、乙、丙三种产品的边际贡献率分别为: !@_( W
甲:[(30-20)/30] ×100%=33.33% ]x
hmM1$
乙:[(25-15)/25] ×100%=40% eqSCNYN
丙:[(22-11)/22] ×100%=50% <N %8"o
各产品的销售比重为: l.i"Z pik
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% %^l77:O
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% Cl
;B%5yl
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% {V!Jj6n
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。