20
1000 . . 5 . 10% .
.
, 200 . . (1000:5). :
: 1000*0,1 = 100(. .);
: 800 . .(1000 - 200), 80 . .;
: 600 . . (800 - 200), 60 . . . .
. , 200+ 100 = 300(. .); 200 + 80 = 280 (. ) . . :
d | I | Y | ||
1000*0,1=100 | 200+100=300 | |||
1000-200=800 | 800*0,1=80 | 200+80=280 | ||
800-200=600 | 600*0,1=60 | 200+60=260 | ||
600-200=400 | 400*0,1=40 | 200+40=240 | ||
400-200=200 | 200*0,1=20 | 200+20=220 | ||
∑ |
, .
.
21
20 , 1000 . . , . :
,
Y = D/[(1-(1+i)-N)/i]
:
. .
, 263,797 . ., .
, 1000*0,1 = 100(. .), 263,797 100 = 163,797(. .). 1000 163,797 = 836,203(. .), 83,620 . ., : 263,797 83,620 = 180,177 (. .) . . .
Y | I=D*i | d=Y-I | ||
1. | 263,797 | 163,797 | ||
2. | 836,203 | 263,797 | 83,620 | 180,177 |
3. | 656,026 | 263,797 | 65,603 | 198,195 |
4. | 457,831 | 263,797 | 45,783 | 218,014 |
5. | 239,816 | 263,797 | 23.982 | 239,816 |
1318,985 | 318,988 |
|
|
, , , 20.
1. .
2. .
3. ?
1. 200 . .. 2 10% . . , . .
2. 10000.. 5 . 20% . :
) ;
) .
.
3. 5 100 . . , 12% . , .
4. 500 . . 12 . 18% . .
5. 8000000. 5 . 10% . .
6. 5 . . .