1.

A boy was cycling northward, then he turned left and rode 3 km. He again turned left and rode 13 km after which he found himself 5 km South-West of the starting point. How far did he ride northward, initially?

A. 4 km
B. 5 km
C. 8 km
D. 9 km
E. cannot be determined
Answer» E. cannot be determined


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