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֪ij˾200220000Ԫ۾12%60%Ͷߡ20021231Kʲn
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ù˾2003O30%錍һĿݏ˾һ_ֵ148Ԫݷ˾ʲ۶ͬ˾ʣɰֵƱ10%10zn”ծȯٶ?003۾ʺTһ£˾ծȯķLɺؔõ˰?3%
Ҫ
12003깫˾Ӝ?BR>2A2003ҪQ?BR>S
12003깫˾Ӝ?BR>ʲռİٷֱ=10000/20000=50%
ռİٷֱ=3000/20000=15%
=20000×30%=6000Ԫ
Iʽ=ʲ-
=6000×50%-6000×15%=2100Ԫ
2A2003ҪQ?BR>=20000×1+30%×12%×1-60%=1248Ԫ
Q?148+2100-1248=1000Ԫ
2.ʽAⷨP65
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2ʽֱ߷̣y=a+bx
ٸߵ͵?-xI͵
P673-2
Ȼߵ͵ϣʽay-bx
ص㣺^{_AԲ
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ҪҪøߵ͵㷨ʽAģͣA?0052700ԪrIʽҪ
ע⣺ѡߵ͵͵ҵʽ?BR>⣺ֽ?BR>by /x=(1600-1200)/700-500=2
ay-bx=1600-2×700=200

by /x=(2500-1900)/700-500=3
ay-bx=2500-3×700=400
ռ
by /x=(4100-3100)/700-500=5
ay-bx=4100-5×700=600
̶ʲռãa=6500
ռ
by /x=(1230-930)/700-500=1.5
ay-bx=1230-1.5×700=180
G?BR>b2+3+5-1.5=8.5
a200+400+600+6500-180=7520
y=a+b·x=7520+8.5x
2005Aƴ?700Ԫr
AҪʽܶ=7520+8.5x=30470Ԫ
՟عֱ߷
ʽֱ߷̣y=a+bx
68ģ3-3
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