书店购书,买甲乙两种书甲书占60%需定价的78%付款乙按定价82%付款卖完书获利的百分率是多少?
问题描述:
书店购书,买甲乙两种书甲书占60%需定价的78%付款乙按定价82%付款卖完书获利的百分率是多少?
答
78%x60%+82%x40%=0.468+0.328=0.796=79.6%
1-79.6%=20.4%
答 获利20.4%