1) ( )()
. .
=
=
, .
2) .
=
= -
= 234150-208746 = 25404
=308036- 259640=48396
=25202/53492=0,47
=48396/91186=0,53
, .
3) .
, .
.
, .
.
i =15%
.
=80%
= .
. = 0,8*113158 = 90526,4
. = 0,8*158872 = 127097,6
.
= + + .
.
, . < , ( ""), , .
, . , , . % 1 %, 1 % 5,27 % 4,67 %.
. . , . 1% 1,89 %. 1,76 %.