Răspuns :
I - /---/---/;
II - /---/;
III- /---/12
I + II + III =172
(172 - 12) : 4 = 40
I - 80
II - 40
II - 52
II - /---/;
III- /---/12
I + II + III =172
(172 - 12) : 4 = 40
I - 80
II - 40
II - 52