Question
Going $500\ m$ towards east first and then $200\ m$ back is same as going $200\ m$ towards west first and then going $500\ m$ back.

Answer

Case I Going $500\ m$ towards East first, i.e. point $A$ to $B$ and then $200\ m$ back, i.e. $B$ to $C.$

As per the above figure shown, final position is $C,$ i.e. $300\ m$ in East.

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