1. sol.1 100gsol......30g sare
500g...........md1= 150g sare
sol.2 100gsol.......10gsare
300g............md2= 30g sare
sol.3 ms3= ms1+ms2= 500g+300g=800g solutie
md3= md1+md2= 150g+30g=180g sare
daca in 800g sol ....sunt.......180g sare
in 100g........................x= c%=w=......calculeaza !!!!!
Dar este de preferat sa utilizezi relatia de defineste concentratia procentuala : c(w)= mdx100/ms, unde ms= md+m,apa