Răspuns :
25 muncitori---------------80 piese
20 muncitori------------------- x piese
x=(25x80 ):20=100 piese
Am folosit regula de 3 simpla,daca nu intelegi ceva ma poti intreba
25 muncitori---------------80 piese
20 muncitori------------------- x piese
x=(25x80 ):20=100 piese