A person walks 10 meters North, turns right and walks 20 meters. Then turns right and walks 10 meters. Again turns right and walks 5 meters. What is the shortest distance and direction from the starting point?
Correct: B
Let the starting point be (0,0).
1. Walks 10 meters North: (0, 10).
2. Turns right (East) and walks 20 meters: (20, 10).
3. Turns right (South) and walks 10 meters: (20, 0).
4. Turns right (West) and walks 5 meters: (15, 0).
His final position is (15, 0). This means he is 15 meters to the East of his starting point.