Question 24
$PQR$ is an equilateral triangle. The point $U$ is the mid-point of $PR$. Points $T$ and $S$ divide $QP$ and $QR$ in the ratio $1:2$. The point of intersection of $PS,RT$ and $QU$ is $X$. If the area of $\triangle QSX$ is 1 square unit, what is the area, in square units, of $\triangle PQR$?
