剩下的让宴5双也是利冲滑唯润 售出的鞋:(44+6.5x5)/(7.4-6.5)=76.5/散培0.9=85(双)购进这批凉鞋一共为85+5=90(双)
7.4-6.5=0.9(元)44÷0.9=............................除不尽⊙﹏⊙b汗!