设打X折就可以使全部彩电(100台)的销售总利润不低于4%,则有:
总成本=100*2000=200000元
总收入=40*2200+60*2200X=88000+132000X
销售总利润=88000+132000X-200000=132000X-112000
(132000X-112000)/200000>=0.04
132000X-112000>=200000*0.04
132X>=112+8
132X>=120
X>=120/132=10/11
设打X折就可以使全部彩电(100台)的销售总利润不低于4%,则有:
总成本=100*2000=200000元
总收入=40*2200+60*2200X=88000+132000X
销售总利润=88000+132000X-200000=132000X-112000
(132000X-112000)/200000>=0.04
132000X-112000>=200000*0.04
132X>=112+8
132X>=120
X>=120/132=10/11