Rod on two supports

Question 1

A uniform rod $AB$ has mass 6 kg and length 6 m. It rests horizontally on two supports at $C$ and $D$, where $AC = 2.5$ m and $AD = 3.5$ m. A particle of mass 4 kg is placed on the rod at the point $P$, where $AP = 2$ m. Take g = 9.8 m s⁻². Find the reactions at $C$ and $D$. Give each answer to 3 significant figures.