Question

Alina si mama ei au in total 115 kg. Stiind ca alina e cu 16 kg mai slaba ca mama ei. Cate kg are mama si Alina?

Answer 1

[m=mama a=Alina]

(m) /--/+16/        }116
(a) /--/

116-16=100
100:2=50 (a)
50+16=66 (m)
verificare: 66+50=116

Answer 2

Metoda grafica
Alina   l------l          } total=116kg
mama l------l+16
(116-16):2=100:2=50 kg are Alina
50 kg+16 kg=66 kg are mama
 Verific: 50 kg+66 kg=116 kg