Pillar A is 10 m north of pillar B. Pillar C is 10 m east of A, pillar D is 20 m south of C, and pillar E is 10 m west of D. Where is E with respect to B?

Explanation

1. 01

   With B at the origin: $A = 10$ m north; $C = 10$ m east, 10 m north; $D = 10$ m east, 10 m south; $E = 0$ east, 10 m south.

2. 02

   So E is 10 m directly south of B.