20 gaini..........7 gaste.........1878 kg
30 gaini..........7 gaste.........2558 kg
Se scad cele 2 randuri:
30-20=10
7-7=0
2558-1878=680 kg
10 gaini..................................680 kg
680:10=68 kg mananca o gaina
68*20=1360 kg mananca 20 de gaini
1360 kg..........7gaste..........1878 kg
7 gaste =1878-1360=518
1 gasca =518:7=74 kg mananca o gasca
Raspuns: o gasca mananca 74 kg
o gaina mananca 68 kg
