Răspuns :
Răspuns:
c= mdx100/ms, unde ms= md+m,apa
md=25g sare
m,apa= 475g
ms=md+m,apa=500g
c= 25x100/500=>5%
Explicație:
Răspuns:
25g+475g=500g
500g-100%
25g-x%
x=100x25/500=2500/500=5%
Răspuns:
c= mdx100/ms, unde ms= md+m,apa
md=25g sare
m,apa= 475g
ms=md+m,apa=500g
c= 25x100/500=>5%
Explicație:
Răspuns:
25g+475g=500g
500g-100%
25g-x%
x=100x25/500=2500/500=5%