Resposta :
Boro-10(X) + boro-11(Y) = 100%
X + Y = 1(I)
X=1-Y
M=Ma1xP1+Ma2xP2/100
10,8=10x+11Y/100
10x+11Y=10,8/100(II)
1000 - 10y + 11y = 1080
Y=80%
X=20%
X + Y = 1(I)
X=1-Y
M=Ma1xP1+Ma2xP2/100
10,8=10x+11Y/100
10x+11Y=10,8/100(II)
1000 - 10y + 11y = 1080
Y=80%
X=20%