A boy rode his bicycle northwards, then turned left and rode 1 km and again turned left and rode 2 km. He found himself exactly one km west of his starting point. How far did he ride northwards initially?

Question

Accepted Answer

A: 2 km

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A boy rode his bicycle northwards, then turned left and rode 1 km and again turned left and rode 2 km. He found himself exactly one km west of his starting point. How far did he ride northwards initially?