作业帮Y-X=45 (85%Y-X)×8=(Y-35-X)×12 Y-X=45 (85%Y-X)×8=(Y-35-X)×12
来源：学生作业帮助网 编辑：作业帮 时间：2024/08/07 04:20:29
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Y-X=45 (85%Y-X)×8=(Y-35-X)×12 Y-X=45 (85%Y-X)×8=(Y-35-X)×12
Y-X=45 (85%Y-X)×8=(Y-35-X)×12
Y-X=45
(85%Y-X)×8=(Y-35-X)×12
Y-X=45 (85%Y-X)×8=(Y-35-X)×12 Y-X=45 (85%Y-X)×8=(Y-35-X)×12
Y-X=45 ①
(85%Y-X)×8=(Y-35-X)×12
简化得：
(0.85y-x)8=(-35+45)*12
0.85y-x=15 ②
①-②得：
0.15y=30
∴y=200
x=155
因为Y-X=45
(85%Y-X)×8=(Y-35-X)×12
(Y-X-15%Y)×8=(Y-X-35)×12(45-15%X)×8=(45-35)×12360-1.2X=120-1.2X=-240X=200
(85%Y-X)×8=(Y-35-X)×12
85%Y-X=（Y-X-35）×12/8
因为Y-X=45 带入得：
85%Y-X=(45-35)×1.5
85%Y-X=10×1.5=15
因为Y-X=45 所以X=Y-45带入得：
85%Y-Y+45=15
解得：Y=200
X=Y-45=155
Y-X=45 (85%Y-X)×8=(Y-35-X)×12 Y-X=45 (85%Y-X)×8=(Y-35-X)×12
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