IKMC 2027 - Grades 7-8 - Self-study SET 5 - Thematic Batch 3 Question 12

Points P,Q,R,S,T,U,V,W trisect the four sides of the quadrilateral as shown. K is an interior point. Given $S_{APKW}=8$, $S_{PKSB}=10$ and $S_{DWKT}=18$, find $S_{KSCT}$.