Odpowiedzi

2009-11-17T16:41:49+01:00
Mr 500g
cp 4%
ms 20g
500 = 100%
x = 4%
X= 20g
520 = 100 %
40 = x
x= 7,8%
zad 2
ms 300g cp 10 % mr 100g
300 = 100 %
x = 10%
x= 30
300-100=200
200 = 100 %
30 = x
x = 15 %