20 saci faina.......19 saci malai......2 364 kg
15 saci faina.........19 saci malai......2 039 kg
_________________________________ ( - )
5 saci faina..............//......................325 kg
Aflam cat cantareste 1 sac faina
325:5 = 65 kg
Aflam cat cantaresc 20 saci faina
20×65 = 1 300 kg
Aflam cat cantareste 1 sac malai
(2 364 - 1 300) : 19 = 1 064 :19 = 56 kg
Verificare:
20×65+19×56 = 1 300+ 1 064 = 2 364
15×65+19×56 = 975 + 1 064 = 2 039
