|___| primul butoi
|___|..+30..| al doilea butoi
|___|.......+150.......| al treilea butoi
540 l - (150 l + 30 l ) =
540 l - 180 l =
360 l
1+1+1=3 (segmente egale)
360:3=120 (valoarea unui segment)
primul butoi=1×120 l = 120 litri
al doilea butoi=1×120 l + 30 l =
120 litri + 30 litri =
150 litri
al treilea butoi=1×120 l + 150 l =
120 litri + 150 litri =
270 litri
verificare:
120 l + 150 l + 270 l = 540 l