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3.




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1.

5%, 11%, 7%. , 210 . ., 55 . . .

1) 210 . ., 210 + 210*11/100 = 233,1 . .
2) () 55 . ., 55+ 55*5/100 = 57,75 . .
. (107%) (105%), , .

2.

, , 10%, 25%, 5%, 4%. ( 1 000 .).

1) (-10%), (+25%), (+4%) (+5%), (-10 + 25 (+4) (+5))% = 6%.
2) : (1000*106)/100= 1 060 .

3.

() () . :

, . . 60 000 68 400 72 000
, .      

1)

, . . 60 000 68 400 72 000
, .      
( ), . . =/   84,444 87,805

2) () .

=*

∆1 = ∆* = (87,805 75)*800= 10 244 . . - ,
∆2 = . *∆ = 87,805*(820-800) = 1 756,1 . . - ,
∆ =∆1+∆2= 10 244 + 1 756,1 = 12 000,1 .. - .

3) () .

=*

∆1 = ∆* = (87,805 84,444)*810= 2 722,41 . . - ,
∆2 = *∆ = 87,805*(810-800) = 878,05 . . - ,
∆ =∆1+∆2= 2 722,41 + 878,05 = 3 600,46 . . - .





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