Answer:
Weight of girl is 216 N on mars and mass of girl remains same because mass is independent of gravity 
Step-by-step explanation:
Mass of girl = 60 kg
Accelaration or gravity = 3.6 m/s^2
 So the formula for weight is 
 W=mg 
 W=60 . 3.6
 W = 216 Kgm/s^2 or 216 N