, 25 2011 . 11:22
+
_
?
, ,, ,
- 14 .
- 14 18
- 18
, ().
= /2,
– ,
– .
(/2)
40.0
.
1.
= ( – 100) – ( – 150) / 2. , 1 62 : (162 – 100) – (162 – 150) / 2 = 62 – 6 = 56
2.
= – 100
, . 100 . ( ).
= – 100
= – 105
= – 110
165
166-175
175
10%, 10%.
3. ()
= / , .
1 62 55 . = 55 / 2,6244 = 21
20 23 –
24 29 –
30 –
, , , , ,
, , , ,
:
?
