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Re: The figure above represents a system of roads along which traffic flow
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30 Dec 2022, 23:16
Roads divide into two after leaving from Z.
50 % move downwards and 50% move upwards
If we notice all vehicles moving downwards will end up taking exit Y.
The upward moving vehicles divide at first junction in 25% (moving upwards ) and 25 % (moving downwards). Again if we notice all vehicles moving downwards will end up taking exit Y.
Vehicles moving upwards from this point again divide, leading to 12.5% moving upwards and 12.5% moving downwards, and these will take exit Y.
Total vehicles taking exit Y= 50% +25% +12.5%= 87.5%
Answer: A