Murari walked 40 km towards North, took a left turn and walked 20 m. He again…
2017
Murari walked 40 km towards North, took a left turn and walked 20 m. He again took a left turn and walked for 40 km. How far and in which direction is he from the starting point?
- A.
20 km West
- B.
20 km South
- C.
20 km East
- D.
20 km North
Attempted by 17 students.
Show answer & explanation
Correct answer: A
To determine Murari's final position relative to his starting point, we can trace his path step-by-step.
Step-by-Step Path Analysis
Start and first movement: Murari walks 40 km towards the North.
Second movement: He takes a left turn and walks 20 m (assuming this is meant to be 20 km to be consistent with the other units) towards the West.
Third movement: He takes another left turn and walks 40 km towards the South.
Calculating the Final Position
Vertical Movement: Murari moved 40 km North and then 40 km South. These two movements cancel each other out (40 - 40 = 0), meaning he is back on the same horizontal line as his starting point.
Horizontal Movement: The only remaining displacement is his movement to the West, which is 20 km.
Therefore, Murari is 20 km West of his starting point.