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x+y=15
y = 15-x
0,1x + 0,04(15-x) = 15*0,06
0,1x + 0,6 - 0,04x = 0,9
0,06x = 0,3
x = 5 kg
y = 15-5 = 10 kg
Y-ilosc solanki 4%(kg)
x + Y=15
10%X+4%Y=6%*15
X=15
-0,1X+0,04Y=0,06:15
0,1X-0,0Y=15
0,1X+0,04Y=0,9
ODP.NALEZY ZMIESZAC 5KG SOLANKI 4%.A 10kg solanki 4%