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b) 1080
c)150
d) 258
800-1080
200-150
300-258
o 35% większa od 800: 135% * 800 = 1,35*800 = 1080
o 25% mniejsza od 200: 75% * 200 = 0,75*200 = 150
o 14% mniejsza od 300: 86% * 300 = 0,86*300 = 258