Question

alexandra,andreea si adi au impreuna 1600 de lei.Calculati ce suma are fiecare daca Andreea are cu 200 de lei mai mult decat adi,iar Alexandra are cat Andreea si Adi la un loc.

Answer 1

Alexandra  /-----------/------------/+200
Andreea    /-----------/+200
Adi            /----------/
Impreuna au 1600
Egalam segmentele
1600-200-200=1200
Aflam cati lei  are  Adi
1600:4=300  lei
Aflam cati lei are Andreea
(300+200=500 lei
Aflam cati lei are Alexandra
(300*2)+200 = 600+200=800  lei