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A.zռʽϢ
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zָʽͶz϶ʧ룬;ZȯϢ롣
3ijIA2000Ԫzƽ45eӚ60%ʽ8%һ?60ƣzĻԪ
A.250
B.200
C.15
D.12
SD
zĻ=2000/360×45×60%×8%=12Ԫ

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׷

ҷ

۶?ݏ?/P>

2400

2600

2700

N/60

N/90

2/60N/180

˷ãԪ/ݏ?/P>

40

20

10

˻ƽ

2

3

50%ĿͻۿP50%ͻԍ?/P>

˻Ļʧ

2%

2.5%

3%

֪A˾\ɱ?0%zͶҪͱ15%ʧָAȻʧ۶İٷֱȡ費ˉk
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Ŀ

۶

2400

2600

2700

2400×1-80%=480

2600×1-80%
=520

2700×1-80%-2700×50%×2%=513

Q

ƽ

60

90

60×50%+180×50%=120

SIʽ

2400/360×60×80%=320

2600/360×90×80%=520

2700/360×120×80%=720

z

320×15%=48

520×15%=78

720×15%=108

ʧ

2400×2%=48

2600×2.5%=65

2700×3%=81

˷

40

20

10

Q

344

357

314

ˣɼ׷

ġճ
1ij˾A2002zGƽ3000ԪҪ֧2100Ԫzȶɿܶ600Ԫù˾2002zֱC
A.70%
B.20.75%
C.50%
D.28.57%
SC
zֱC=rҪ֧ܶȶɿֽ~÷zGƽ×100%=2100600÷3000×100%=50%