Displacement of a car

A car at point \(A\) on a straight road goes west for \( 20 \) seconds, arriving at point \(B\) which is \( 200 \) m away from \(A.\) The car then heads back to the east for \( 30 \) seconds, arriving at point \(C\) which is \( 800 \) m away from \(B.\) What is the displacement of the car from point \(A\)?

Assume that \(+\) is east and \(-\) is west.

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