Question : Directions: A girl walks 30 metres towards the south, then turns to her right and walks 30 metres, then turns to her left and walks 20 metres, then again turns to her left and walks 30 metres. How far is she from her initial position?
Option 1: 20 metres
Option 2: 30 metres
Option 3: 50 metres
Option 4: 60 metres
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Correct Answer: 50 metres
Solution :
Firstly, we will draw the diagram as per the given instructions –
Now, we have to find the distance between starting and endpoints.
In the above figure, O is the starting point and D is the finishing point. So, OD is the distance from the starting point.
OD = OA + AD (AD = BC = 20 m)
OD = 30 + 20 = 50 m
So, the distance from the starting point is 50 metres. Hence, the third option is correct.
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