A and B are standing at a distance of 20 km from each other on a stra...
Required distance = 5 + 5 = 10 km
A and B are standing at a distance of 20 km from each other on a stra...
Distance between A and B before they start walking: 20 km
Distance covered by A and B in the initial phase:
A walks eastwards for 5 km
B walks westwards for 5 km
After this, A and B turn and walk in different directions:
A turns left and walks 10 km
B turns right and walks 10 km
Finally, A and B turn left again and cover a distance of 5 km each.
To find the distance between A and B after all these movements, let's analyze their positions step by step.
Step 1: Initial Positions
A is at the easternmost point, and B is at the westernmost point. The distance between them is 20 km.
Step 2: After walking 5 km
A has moved 5 km eastwards from the initial position, and B has moved 5 km westwards. The distance between them is now 10 km.
Step 3: After turning and walking 10 km
A has turned left and walked 10 km towards the north. B has turned right and walked 10 km towards the south. Now, A and B are on the same latitude, but there is still a distance between them.
Step 4: After turning left again and walking 5 km
A and B both turn left and walk 5 km each. Since they are moving in the same direction, the distance between them remains the same.
Final Distance between A and B:
After Step 4, A and B are on the same latitude and have covered the same distance. Therefore, the distance between them is 10 km.
Hence, the correct answer is option A) 10 km.