A toddler applies a 25.0 N force to a chair over a distance of 2.5 m, the chair is being pushed across a smooth floor against a force of friction (10.0 N resistance). How much work is being done?

Answer 1

Work due to frictional resistance
= frictional force * Distance
Here
force = 10.0 N (due to friction)
Distance = 2.5 m

Answer 2

The answer says 62 J not 25

Answer 3

From the data given, I cannot explain the difference. If you have a diagram, please post.
Perhaps someone else can enlighten you on this.