Odpowiedzi

2009-11-04T19:06:18+01:00
A - Ania
b - Basia
c - Celina
c =70
a =b+40%*b
a =c-40%*c

a =b+40%*b
a =70-28

a =42

42 =b+4/10b
42 =14/10b
14b =420
b =30

Odp :Ania zebrała 42 autografy a Basia 30 autografów
4 2 4
2009-11-04T19:21:01+01:00
Ania-> 70*40
----- = 28 70-28=42
100

Celina->70

Basia-> 100%-40%=60%


140-------->42
: ;
; :7 ; :7
; ;
20 6
; ;
; *5 ;
; ;
100% 30
3 3 3