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a) 120
b) 150
c) 1080
d) 258
Zad. 2
kwota-123 zł
zniżka - 3 %
100% - 3% = 97%
zapłata - 123 * 97% = 119.31 zł
Odp. Zapłaciła 119.31 zł
a)80 - 100%
x - 150%
x = 80 * 150%/100% = 120
b) 200 - 25% * 200 = 200 - 50 = 150
c) x = 800 * 135%/100% = 1080
d)300 - 14% * 300 = 300 - 42 = 258
zad. 2
3% * 123 = 3,69
123 - 3,69 = 119,31
Odp.: Zaplacila za te zakupy 119,31 zl