Răspuns :
/___/___/___/3/3 capacitatea intregului butoi
/___/___/2/3=80 l
Aflam o treime:
80:2=40 ( 1/3)
40×3=120 l ( 3/3)
/___/___/2/3=80 l
Aflam o treime:
80:2=40 ( 1/3)
40×3=120 l ( 3/3)