Question

pllls sa ma ajutati, imi trebuie azi, dau coroana. Multumesc!

Answer 1

 c1= 20%
ms1=200g
md 1 se calculeaza din relatia c= mdx100/ms
md1=c1xm1/100= 40g

C2?
c2=md2x100/ms2,  unde 
md2= md1+m,adaugat=50g
ms2= ms1-+m adaugat= 210g
c2= 50x100/210=.........................calculeaza !!!!

Answer 2

c1 = md1/ms1*100
md1 = 200*20/100 = 40 g zahăr
md2 = md1 + 10 = 40+10 = 50 g zahăr
ms2 = ms1 + 10 = 200+10 = 210 g soluție
c2 = md2/ms2 * 100 = 50/210*100 = 23,8%