Medium
Arun goes 30 metres North, then turns right and walks 40 metres, then again turns right and walks 20 metres, then again turns right and walks 40 metres. How many metres is he from his original position?
Explanation
Explanation
Track the movement: 30 m North, then 40 m East (turn right), then 20 m South (turn right again), then 40 m West (turn right again). Net North-South movement = 30-20 = 10 m North. Net East-West movement = 40-40 = 0. So Arun ends up 10 m from his starting point.
PRO TIP
Re-check your working by substituting the answer back into the original question.