‘K’ walked 5 metres towards North, took a left turn and walked for 10 metres. He then took a right turn and walked for 20 metres, and again took a right turn and walked 10 metres. How far is he from the starting point?a)20 metresb)15 metresc)25 metresd)30 metersCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Hence, the correct option is (C)

Answer

Solution:

Given information:
- 'K' walked 5 metres towards North.
- 'K' then took a left turn and walked for 10 metres.
- 'K' then took a right turn and walked for 20 metres.
- 'K' again took a right turn and walked 10 metres.

To find:
- How far is 'K' from the starting point?

Let's analyze the given information step by step.

1. 'K' walked 5 metres towards North:
- This means 'K' moved 5 metres in the North direction from the starting point.

2. 'K' took a left turn and walked for 10 metres:
- After taking a left turn, 'K' changed his direction to the West.
- 'K' walked for 10 metres in the West direction.

3. 'K' took a right turn and walked for 20 metres:
- After taking a right turn, 'K' changed his direction to the North again.
- 'K' walked for 20 metres in the North direction.

4. 'K' again took a right turn and walked 10 metres:
- After taking a right turn, 'K' changed his direction to the East.
- 'K' walked for 10 metres in the East direction.

Now, let's determine the final position of 'K' and calculate the distance from the starting point.

- 'K' moved 5 metres towards the North.
- Then, 'K' moved 10 metres towards the West.
- Next, 'K' moved 20 metres towards the North.
- Finally, 'K' moved 10 metres towards the East.

The North and South movements cancel each other out, and the West and East movements also cancel each other out.

So, the net distance covered by 'K' is 20 metres towards the North.

Therefore, 'K' is 20 metres away from the starting point.

Hence, the correct answer is option C) 25 metres.

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