MPQ = PQM = 3x; ∆MPQ
MPQ + PQM + PMQ = 180^o; 3x + 3x + 30^o = 180^o
6x \times 30^o = 180^o; 6x + 180^o - 30^o; 6x + 150^o
\(x = \frac{150}{6} = 25^{\circ}\)