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14




14.1 900 . , 400 . , 350 . , 100 . , _________ . . ○ 50 ○ 50 ○ 450 ○ 150

14.1:

, ; , . 50 :
.

 

14.2 100 . ., 60 . ., 220 . ., ________________ .. ○ 40 . . ○ 180 . . ○ 120 . . ○ 60 .

14.2:

. . . . , 60 . .
.

:

60 . .

 

14.3 () , 250, 150, 300, 150, 50.   100

14.3:

, . . , .

= 300 + 150 + 50 = 500

= 250 + 150= 400

: 500 400 = 100.

 

14.4 ○ ○ ○ ○

14.4:

, .

 

14.5 , .   ○ 1 ○ 2 ○ 4 ○ 3

14.5:

. , (AD). . , , .

:

1

2

4

3

14.6 300 .., 1500 .., 300 . ., ○ 1200 .. ○ 2100 .. ○ 1800 .. ○ 900 ..

14.6:

. , .

(300)= (1500) (300 + ). = 900 ..

 

14.7 , IS, ○ ○ ○ ○

14.7:

IS (-) , . IS , (D). , . , IS.

14.8 , IS ○ ○ ○ ○

14.8:

IS (-) , . IS ( ) , (D). , .






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