Answer
given,
A be the starting point
moves to 5 cm vector at 60 degrees east of north. mark the end point be B.
From B again 10 cm vector due north mark it as C
From C 5 cm vector 45 degrees east of north and mark the end point as D
From D we move to 8 cm vector due east and reach to point E
At last to reach the treasure 10 cm vector at 25 degrees west of south
Mark the treasure point Be T.
Diagram attached below shows the required direction of motion.