这一面怎么做?
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/18 21:06:06
解题思路: (1)设原价为1,则跳楼价为2.5×1×(1-30%)×(1-30%)×(1-30%)=2.5×0.73, 所以跳楼价占原价的百分比为2.5×0.73÷1×100%=85.75%; (2)原价出售:销售金额=100×1=100, 新价出售:销售金额=2.5×1×0.7×10+2.5x×0.7×0.7×40+2.5x×0.73×50, =109.375; ∵109.375>100,∴新方案销售更盈利.
解题过程:
解:(1)设原价为1,则跳楼价为2.5×1×(1-30%)×(1-30%)×(1-30%)=2.5×0.73,
所以跳楼价占原价的百分比为2.5×0.73÷1×100%=85.75%;
(2)原价出售:销售金额=100×1=100,
新价出售:销售金额=2.5×1×0.7×10+2.5x×0.7×0.7×40+2.5x×0.73×50,
=109.375;
∵109.375>100,∴新方案销售更盈利.
解题过程:
解:(1)设原价为1,则跳楼价为2.5×1×(1-30%)×(1-30%)×(1-30%)=2.5×0.73,
所以跳楼价占原价的百分比为2.5×0.73÷1×100%=85.75%;
(2)原价出售:销售金额=100×1=100,
新价出售:销售金额=2.5×1×0.7×10+2.5x×0.7×0.7×40+2.5x×0.73×50,
=109.375;
∵109.375>100,∴新方案销售更盈利.