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Question
A boy rode his bicycle northwards, then turned left and rode one 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?
A boy rode his bicycle northwards, then turned left and rode one 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?
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Solution
The correct option is B 2 km
Clearly, the boy rode from A to B, then to C and finally up to D. Since 2 km D lies to the west of A, so required distance =AB =CD =2 km.
Clearly, the boy rode from A to B, then to C and finally up to D. Since 2 km D lies to the west of A, so required distance =AB =CD =2 km.
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