ms1=200g
c1=10%
din definitia, c=mdx100/ms, unde ms= md+m,apa, deduc
md1= 20g si m,apa= ms-md= 180g
a doua solutie, va fi mai concentrata ,pentru ca solutia pierde 1/3m,apa= 180g/3
m,s2= ms1-180/3= 200g-60g=140g
md2=md1
c2=20x100/140= calculeaza !!!!
trebuie sa dea o valoare mai mare,
