Răspunsuri

2014-11-12T06:06:34+02:00
Daca m apa =1700 nu are cum ms=300, sigur e md
si atunci avem c=md*100/ms
ms = m apa + md
ms = 1700 +300=2000
c=300*100/ 2000
c=30/2
c=15%