Answer:
W = 0.7071 F x, Â W = 35.355 J
Explanation:
Work is defined
     W = F. d
bold indicates vectors,
      W = F d cos θ
where the angle is between force and displacement.
As the system runs on snow, the friction force is negligible, therefore
      W = F x cos 45
      W = 0.7071 F x
Unfortunately the values ​​of the force and the distance do not appear, suppose that the force is F = 10 N and the distance x = 5m
      W = 0.7071  10  5
      W = 35.355 J
Work is positive because force and displacement go in the same direction
