Can someone help me and explain on the way?

Problem 3 (14 points). In Figure 3, there is enough friction between the inclined surface and the 10.0-kg mass so that the system is at rest (Note that sin 37' = 0.60; cos 37* = 0.80). MB=MA=10.0-kg (a) Draw free-body diagrams for both masses and show all the 100kg forces acting on these two masses. (6 points) (b) Calculate the frictional force between the 10.0 kg mass and the inclined surface. (8 points)