ms₁=500g
c₁=10% din acestea aflam md
md₁=c*ms/100
md₁=10*500/100
md₁=50
ms₂=200
c=30% din acestea aflam md
md₂=c* ms/100
md₂=30*800/100
md₂=240
md final = md₁ +md₂
md final =50+240
md final =290
ms final =ms₁+ms₂
ms final=500+800
ms final =1300
c=md/ms *100
c=290/1300 *100
c=22,3%
cel mai bun raspuns!!!
