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calculeaza concentratia solutiei obtinute prin adaugarea a 25g zahar la 500g sirop 10%

Răspuns :

md=25g,   aceasta masa se adauga si la md1 si la ms1
ms1=500g
c1=10%
md1= c1xms1/100=125g

c2=?
c2=( md1+md)x100/(ms1+md)
c2=150x100/525=.....................calculeaza !!!