1) 4月份的销售量为:300*(1-24%)*(1-1.3%)=225.036
故(300-225.036)/300=25%
2)假设原价1元.甲:1*(1-10%)*(1+20%)=1.08
乙:1*(1-10%)=0.9
所以甲的价格高.
3)1.【32*(40-5)-1060】/1060=5.7%
2.1060/40=26.5 ,26.5-26.5*20%=21.2元
3.(21.2*5+32*35-1060)/1060=15.7%
4)(10284.8-8000)/(8000*3)=9.52%