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a)
md=129 zahar
ms=18 solutii
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C%=?

b)
md=15g coda carbuni
ms=300g solutii
------------------------------------
C%=?

c)
md=7g zahar
Mapa=129g apa
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C%=?
VA ROGGGGGGGGGGGGGGGGGG




Răspuns :

A)c supra 100= md supra ms C supra 100= 129supra 18 C= 100•129 supra 18 C=12900supra 18 C=716,66 B)c supra 100= md supra ms C supra 100=15 supra 300 C=15•100 supra 300 C= 1500 supra 300 C=5