x = ?
100% - 40 % = 60%
60% - 30% = 30%
x = 30% = 30 zł
100%-40% = 60% = 0,6
cena = 0,6x
100%+30%= 130%=1,3
cena = 0,6x*1,3=0,78x
Odp. Cena będzie stanowiła 78% ceny początkowej.
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x = ?
100% - 40 % = 60%
60% - 30% = 30%
x = 30% = 30 zł
100%-40% = 60% = 0,6
cena = 0,6x
100%+30%= 130%=1,3
cena = 0,6x*1,3=0,78x
Odp. Cena będzie stanowiła 78% ceny początkowej.