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100%-40%=60%
70 - 100%
B- 60%
B=70*60/100=4200/100= 42
Basia ma 42 autografy.
teraz ania:
100%+40%=140%
140%- A
100%-42
A=140*42/100 =58,8≈ 58 .
Ania ma 58 autografow.
70 - 40% z 70= 70 -28=42- Ania
42- 40% z 42= 42- 16,8= 25- Basia