FIGURE, PQRS is the parallelogram.Looking at triangles SPX and YQX,Since SP ∥ YQ, all the ANGLES of 2 triangles will be equal thus triangles SPX and YQX areSimilar triangles.Now given PQ = QX that means QX = ½ PX⇒ YQ = ½SP = ½RQ.∴ AREA of triangle SYR = ¼(Area of parallelogram) = 75 cm2