A boy rode his bicycle Northward, then turned left and rode 1 km and again turned left and rode 2 km. He found himself 1 km West of his starting point. How far did he ride Northward initially? MCQ with Answer and Explanation
A boy rode his bicycle Northward, then turned left and rode 1 km and again turned left and rode 2 km. He found himself 1 km West of his starting point. How far did he ride Northward initially?
A. 5 km
B. 1 km
C. 2 km
D. 3 km
Answer: Option C
Solution (By JKSSB Mock Tests)
Let initial North = x. Then left (West) 1 km, left (South) 2 km. Final position 1 km West of start means net North =0 so x ā 2 =0 ā x=2.
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