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2.Mr = 140 + 40 = 180
Ms = 40
Cp = Ms x 100% = 22,22 %
_________
Mr
12*12u + 22u + 11*16u=342u
2
140g + 40g = 180g
180g - 100%
40g - x
x= 40*100/180=22,2%
odp. 22,2%