va rog sa rezolvati prin metoda comparatiei

Răspuns:
1.17f......... 12c.........1210kg
21..........12...........1410
21-17=4f ...1410-1210=200
1sac făină=200:4=50kg
12c=1210-17×50=360=>
1sac cartofi=30kg
2.4mm.........3ms.........125lei
2...............6. ......130. /2
1.......…. 3. ....65
4-1...........3-3. 125-65
3m m. 0. ....60
1m m=60:3=20lei
3m stofa =65-20=45lei
1m stofa=45:3=15lei