Gaurav walks 20 m towards the North. He turns left and walks 40 m. He again turns left and walks 20 m. Finally, he turns left and walks 20 m. How far is he from his starting position?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 20 m
A left turn moves the facing direction one step anticlockwise (North → West → South → East). Track the facing direction after every turn and keep a running total of the distance from the start.
Facing North, 20 m: 20 m north of the start
Turns left, now facing West, 40 m: 20 m north, 40 m west
Turns left, now facing South, 20 m: \(20-20=0\) m north, 40 m west
Turns left, now facing East, 20 m: \(40-20=20\) m west
He is 20 m (due West) from his starting position.
