3 chifle----------------------------2 cornuri----------------------800g } amplificam cu 2
6 chifle----------------------------3 cornuri---------------------1500g
avem
6 chifle--------------------------4 cornuri----------------------1600g
6 chifle--------------------------3 cornuri----------------------1500g
4-3=1 corn
1600-1500=100 g cantareste un corn
4x100=400g cantaresc 4 cornuri
1600-400=1200 g cantaresc 6 chifle
1200:6= 200g o chifla
cu cat cantareste mai putin un corn decat o chifla
200-100=100 g