Răspunsuri

2014-03-08T19:02:28+02:00
C final=(md final/ms final)*100=>md final=(c final * ms final)/100=(200+300)*20/100=100g
md final = md init
c init=(md init/ms init)*100=>c init=(100/300)*100=> c init = 33,33%

Scuze de intarziere :)