Dau coroana, multumesc
![Dau Coroana Multumesc class=](https://ro-static.z-dn.net/files/dc7/418cf0a51877f7942454aa8096b4b00f.jpg)
Răspuns:
c=mdx100/ms
ms= mdx100/c= 50x100/20g= 250g
ms= md+m,apa---> m,apa= 250g-50g=200g
Explicație: