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peste 1700 g de sirop de c=60% se adauga 300 g de apa.Afla concentratia procentuala


am nevoie urgent​


Răspuns :

Răspuns:

md=1700g

C=60%

mapa =300g

ms=1700+300=2000g

C=md×100/ms=1700×100/2000=85%