Determination of the reactions at the supports of a beam

A uniform plank AB 30 𝑚 long, weighing 100 𝑁 is pivoted at points P, Q which are 5 𝑚 from the ends A and B respectively. A boy of weight 250 𝑁 stands at point D on the plank, 1 𝑚 away from 𝑄 and the arrangement is in equilibrium. Determine the reaction 𝑅1 and 𝑅2 at the supports?