30%*80%-(1-130%*50)*20%怎么算不出来?
问题描述：
30%*80%-(1-130%*50)*20%怎么算不出来?
答
=0.3*0.8-(1-1.3*0.5)*0.2
=0.24-(1-0.65)*0.2
=0.24-0.35*0.2
=0.24-0.07
=0.17
=17%