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Ex 6 va rog e urgent dau coroana!!

Ex 6 Va Rog E Urgent Dau Coroana class=

Răspuns :

Ar = (c1%xA1+c2%xA2+...+cn%xAn)/100

Ar.O = (99,76x16+0,04x17+0,2x18)/100

= 16,004 u.a.m.