Facing east, Aditi walks 12 km. She then turns around and walks 4 km, turns left and walks 6 km. How far is she from her starting point?

Explanation

1. 01

   After turning around she faces west; 12 km east then 4 km west leaves her 8 km east.

2. 02

   Left from west is south, so the last leg is 6 km south.

3. 03

   Distance $= \sqrt{8^2 + 6^2} = 10$ km.