Answer:
40m to the East
Step-by-step explanation:
Displacement is the distance moved in a specific direction. When writing the displacement value of a moving body, the direction must be put in the description. 
Displacement takes into account the start and finish position of a body. 
 100m 
Start -------------------------------------------------------------- →
 60m
 Final ←----------------------------------
 
Displacement = 100m - 60m = 40m 
 Therefore, the displacement is 40m due east