Sagot :
Marion: 20euros.
Mathilde: 44euros.
Antoine: 36euros.
Maxime: 24euros.
Gaëtan: 62euros.
Marion = 20 euros
Maxime = 20 +4 = 24 euros
marion + maxime = 44 euros
mathilde = 44 +3 = 47
antoine = 47 -8 = 39
total des 4 = 20 +24 +47 +39 = 130
donc Gaetan = 130/2 = 65 euros