Răspuns:
Explicație:
350g * 12% = 42 g zahar (in prima solutie)
350 -42 = 308 g apa (in prima solutie)
42 g +10 g = 52 g zahar (in a doua solutie)
308g +120g= 428 g apa (in a doua solutie)
52g zahar +428 g apa = 480g solutie
Concentratia solutiei obtinute :
52g / 480g *100= 10,83%
Succes !!