Question : Directions: Rama walked 10 km south, turned right, and walked 5 km. Then again, she turned right and walked 10 km. Then she turned left and walked 10 km. How many km will Rama have to walk to reach the starting point?
Option 1: 25 km
Option 2: 20 km
Option 3: 5 km
Option 4: 15 km
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Correct Answer: 15 km
Solution :
Firstly, we will draw the diagram as per the given instructions –
In the above figure, O is the starting point and C is the finishing point. So, OC is the distance from the starting point.
OC = OD + DC
And, OD = AB = 5 km
OC = 10 + 5 = 15 km
So, to reach the starting point Rama has to walk 15 km. Hence, the fourth option is correct.
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