Odpowiedź:
4200+600=4800zł
4800*110%=5280zł
5280-4200=1080zł
5280-100%
1080-x
5280x=1080 /:5280
x=0,204=20,4%
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Odpowiedź:
4200+600=4800zł
4800*110%=5280zł
5280-4200=1080zł
5280-100%
1080-x
5280x=1080 /:5280
x=0,204=20,4%