9.50. 






















-





|
|
|
3. |
|
111 |
111 |
|
|
|
N |
200 |
|
|
|
= |
220 |
311 |
||
|
||||
|
|
2

9.51. 






















-





1 
















(
= 


).
111





N




80



N
1%
111
200 |
220 |
311 |
|
||
|
|
2
2



9.52. 





























3.
111 |
|
111 |
|
|
|
200 |
220 |
311 |
|
222 |
|
|
|
2

2



125
9.53. 



























3.
111 |
111 |
|
|
200 |
311 |
220 |
|
|
222 |
|
2 |
2



9.54. 










111 










3 
3.
111 |
|
|
|
111 |
|
|
|
|
|
|
200 |
220 |
311 |
|
|
|
|
||
|
|
222 |
1541 |
|
|
|
|
||
|
|
|
|
9.55. 






















-

















3.
126
111





N




80



N
1%
111
200
220 311
2
2



9.56. 






















|
,21 |
3 |
3. |
111 |
|
111 |
|
|
|
|
|
200 |
311 |
|
|
220 |
|
|
|
|
222 |
|
|
|
2 |
|
|
2



9.57. 
















100 



2
200 























100 




200 














127