正确答案:B TCU|k ,
答案解析:甲、乙、丙三种产品的边际贡献率分别为: c}Jy'F7&f
甲:[(30-20)/30] ×100%=33.33% NF0IF#;a
乙:[(25-15)/25] ×100%=40% xp/u, q
丙:[(22-11)/22] ×100%=50% R8EDJ2u#
各产品的销售比重为: @^Mn
PM
甲:[30×1000/(30×1000+25×5000+22×300)] ×100%=19% d|on
y
乙:[25×5000/(30×1000+25×5000+22×300)] ×100%=77% 2t1 WbP1
丙:[22×300/(30×1000+25×5000+22×300)] ×100%=4% =N<Hc:<t4
加权平均边际贡献率=33.33%×19%+40%×77%+50%×4%=39.13%。