Răspuns:
a+b+c=1575lei
a |.........|..........|..........|..........||..|15+15
b|..........|
c |..........|..|15
egalam seg
1575--45=1530
aflam cat a primit al doilea:
1530:6=255 lei
aflam cat a primi al treilea
255+15=270lei
aflam cat a primit primul
255×4+30=1050 lei