Analysis of single reinforced rectangular beam

There is a simply supported beam that bears a concentrated load P at $\frac{L}{3}$ and $2\frac{L}{3},$ as shown in the figure below, where $L=6m.$ The concentrated load

is divided into static loads $PD=30kN$ and $PL=40kN.$ Please draw:

$(1)$ Bending moment diagram of the beam when P is only PD $(10\%)$

$(2)$ Bending moment diagram of the beam when P is only PL $(10\%)$

$(3)$ Find the maximum $P(10\%)$ in the load combination