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0,08 * 860 zł = 68,8 zł
860 zł - 68,8 zł = 791,2 zł - cena po obniżce
0,05 * 791,2 zł = 39,56 zł
791,2 zł + 39,56 zł = 830,76 zł - cena aktualna lodówki.
860 - 100 %
x - 8 %
x =
x = 68.8
Cena po obniżce to 860 - 68.80 = 791.2
791.2 - 100%
x - 5%
x =
x = 39.56
Cena po podwyżce to 791.20 + 39.56 = 830.76 zł