:
250 .
1
150 .
50 .
1 ..
:
75 .
2 .. ( )
250 .
125 .
1/2
1/2 ..
50 .
1/8 .
:
500 . 20% ( 18%)
125 .
2
2 ..
100 . - ( 20% )
2 ..
, , , 1 . , . , , . , , . . . , - . . 180 . , 3 . , , . 75
- -
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