Question

3cornuri...................5paine.......................2300g
4cornuri...................2paine.......................1200g

1corn +1corn=?g

Answer 1

3cornuri...5paini...2300g( x4)
4cornuri...2paini...1200g( x3)

12c...20p...9200g
12c...6p...3600g

20p-6p=14p cantaresc (9200-3600)=5600g
5600g:14p=400g o paine.

Aflam c:
2300-(400*5)=300(3 cornuri)
300:3=100(un corn)

Un corn+ o paine=500

Answer 2

3cornuri...................5paine.......................2300g inmultesc cu 4
4cornuri...................2paine.......................1200g inmultesc cu 3

12cornuri..........20 paini..........9200g
12cornuri............6 paini..........3600g  scad sistemele
12cornuri-12 cornuri...........20paini-6paini......9200g-3600g
14paini...........5600g
o paine?
5600g:14=400g

3cornuri........5 ori 400g...........2300g
3 corunuri.......2000g...........2300g
3cornuri...........300g
un corn?
300:3=100g

un corn+un corn=100g+100g=200g