If the child pulls with a force of 19 n for 15.0 m , and the handle of the wagon is inclined at an angle of 25 ∘ above the horizontal, how much work does the child do on the wagon?

The solution for this problem is we will be using the formula for work which is:
Work = Fs, where F is the component of the force in the direction of motion 
Horizontal component of force = F = (19 N)(cos 25) = (19)(0.906) 
Fs = (190)(0.906) = 172.14 J