Notam:
g = capacitatea galetii
b = capacitatea butoiului
g = b : 10 ==> b = 10×g
b = g + 45 ==> b - g = 45
g |__|
b |__|__|__|__|__|__|__|__|__|__|
10 segmente egale - 1 segment egal = 9 segmente egale = 45
45 : 9 = 5 (un segment egal)
g = 5 litri are o galeata
b = 10×5 = 50 litri are un butoi