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1.Corina si Diana au sadit impreuna 67 de panselute.Corina a sadit cu 13 panselute maimult decat Diana.Cate panselute a sadit fiecare fata?

Răspuns :

c + d = 67
67 - 13 = 54

54 / 2 = 27 panselute a sasit Diana
27 + 13 = 40 panselute a sadit Corina