Odpowiedzi

2009-11-12T18:02:35+01:00
540 - 450 = 90
90/ 450 = 20%

540 * 80% = 432

450 - 432= 18
18/450= 4%

odp. cena jest niższa o 4%


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2009-11-12T18:02:36+01:00
100% = 450 zl
x = 540 zl

100%x540zl/450 zl = 120%

120% - 100% = 20% Wartosc towaru podniesiono o 20%




20% z 540zl = 108zl

540zl - 108 zl = 432 zl

450zl - 432 zl = 18 zl

450 = 100%
432 = x%

432x100%/450 = 96%
100% - 96% = 4%

Odp: Cena towaru byla nizsza od ceny poczatkowej o 4%
2009-11-12T18:09:55+01:00
540-450=90
90/450*100=20%
540*0,2=108
540-108=432
450-432=18
18/450*100=4%
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