12.5*0.25+75*87.5% 25.3-12*24%+0.72 (1-50%*二分之一)/15%
问题描述:
12.5*0.25+75*87.5% 25.3-12*24%+0.72 (1-50%*二分之一)/15%
12.5*0.25+75*87.5%
25.3-12*24%+0.72
(1-50%*二分之一)/15%
答
12.5*0.25+75*87.5%
这个做过了
25.3-12*24%+0.72
=25.3-2.88+0.72
=22.42+0.72
=23.14
(1-50%*二分之一)/15%
=(1-0.5*0.5)/0.15
=0.75/0.15
=5