推荐回答(5个)
1,
赚了:120*20%=24
亏了:120/(1-20%)-120=150-120=30
一共24-30=-6,亏了6万
2,
8168-8000=168
168/(1-20%)=210
210/8000=2.625%
3,
20*5.5%*2+2=20*2.2+2=4.2
4,
0.1725%*6*0.6=0.621%
4000*(1+0.621%)=4024.84
24.84*(1-20%)=19.87元
5,
(1)500*30*30%=4500
(2)500*30*30%*90%=4050
若按进价8折损失:500*10%*30*(1-80%)=300
4050-300=3750
若按加价后8折出售获利:500*10%*30*[(1+30%)*80%-1]=60
4050+60=4110
1 120*(1+0.2)=144 120*(1-0.2)=96 144+96=240=120+120
所以不赚亏
2 设年利率为X
8000X*(1-0.2)+8000=8168 X=2.625%
3 20(1+0.055)(1+0.055)+2=22.2605+2=24.2605万
4 0.001725*0.6=0.001035
本利和=4000(1+0.001035)(1+0.001035)(1+0.001035)(1+0.001035)(1+0.001035)(1+0.001035)=4024.9元
税后利息=(4024.9-4000)*(1-0.2)=19.92元
5 预计盈利 30*0.3*500=4500元
实际盈利 500*0.9*30*(1+0.3)+500*0.1*30*0.8-500*30
=17550+1200-15000
=3750元
第一题:
假设其中一套赚了20%的住房为X,另一套亏了20%的住房为Y
则:X+X×20%=120 Y-Y×20%=120
X(1+20%)=120 Y(1-20%)=120
120%X=120 80%Y=120
X=100 Y=150
所以:赚了20%的住房赚了 亏了20%的住房亏了
100×20%=20 150×20%=30
故:亏的-赚的=30-20=10
答:房产商亏了10万。
第二题:
假设银行利率为X
则:8000+8000×X-8000×X×20%=8168
8000+8000×X(1-20%)=8168
8000+8000×X×0.8=8168
80000+6400X=8168
6400X=168
X=0.02625≈0.026
答:银行年利率为0.02625或0.026。
第三题:
20×5.5%×2=2.2
20+2.2+2=24.2
答:一共要还银行24.2万元。
第四题:
4000×0.1725%×60%×6=24.84
4000+24.84=4024.84
答:定活两便存款可获得本利和4024.84元。
24.84-24.84×20%=19.872
答:缴纳20%个人所得税后利息为19.872元。
第五题:
(1)
(30×30%)×500=4500
答:预计盈利4500元。
(2)
(30×30%)×500×90%+〔30×(1+30%)×80%-30〕×500×10%
=9×450+(31.2-30)×50
=4050+60
=4100
答:预计盈利4100元。
1、第一套原价:120÷(1+20%)=100(万元)
第二套原价:120÷(1—20%)=150(万元)
总支出:100+150=250(万元)
总收入:120×2=240(万元)
240-250=-10(万元)
所以 房产商亏了,亏了10万元
2. 总利息:168/(1-20%)=210
年利率:210/8000=0.0625
3.应还本金+利息共:20*[(1+5.5%)^2]=22.2605(万元)
滞纳金:2万元
一共还:22.2605+2=24.2605(万元)
4.定活两便月利率:0.1725%*0.6=0.1035%
本息共:4000*[(1+0.1035%)^6]=4024.9
利息:4024.9-4000=24.9
利息税:24.9*0.2=4.98
实得利息:24.9-4.98=19.92
5.每件盈利:30*0.3=9(元)
共预计盈利:500*9=4500(元)
出售90%部分盈利:500*0.9*9=4050(元)
八折出售时售价:30*0.8=24(元)
每件亏损:30-24=6(元)
出售10%部分亏损:500*0.1*6=300(元)
实际盈利:4050*300=3750(元)
楼上几位的答案都有些小小的错误,且看我慢慢解答
1、设第一套房屋成本为X元,第二套为Y员
可得x(1+20%)=120 解得X=100
Y(1-20%)=120解得Y=150
所以总成本就是100+150=250,总售价是120+120=240,
所以亏了250-240=10元
2.设年利率为X,则8000+8000X(1-20%)=8168
解得X=2.625%
3、20*55%*2+20+2=24.2万元
4、(1)4000×0.1725%×60%×6=24.84
所以定活两便存款可获得本利和4000+24.84=4024.84元
(2)缴纳20%个人所得税后利息为24.84-24.84×20%=19.872元
5、(1)30*30%*500=4500元
(2)出售90%部分盈利500*90%*30*30%=4050元
出售10%部分盈利500*10%*【30*(1+30%)*80%-30】=60元
所以共盈利4050+60=4110元
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