Răspunsuri

2014-11-06T16:56:08+02:00
20%

deci m1(s.d.)=10%*40g/100%=4g
m2(s.d.)=30%*40g/100%=12g
W(final)=m(s.d.)*100%/m(solutie)=(4g+12g)*100%/(40g+40g)=16g*100%/40g=20%
Raspuns w=20%
4 2 4