Question

数学题请教

一批服装按90%的期望利润定价,结果只卖了50%的商品,余下的服装决定打折销售,最后获得利润是原来期望的58%,问该商品约打了几折？

Answer 1

50%*（1+90%）+50%*（1+90%）*x=1+58%
0.5*1.9+0.5*1.9*x=1.58
0.95+0.95x=1.58
0.95x=0.63
x=63/95≈66.3%

Answer 2

..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................我是真的不会啊

Answer 3

不知道！！！