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UKMT Pink Kangaroo, 2020

Algebra Difficulty 2.0 Junior Find the answer United Kingdom

The shortest path from Atown to Cetown runs through Betown. Two of the signposts that can be seen on this path are shown, but one of them is broken and a number missing. What distance was written on the broken sign?

(A) $2$ km (B) $3$ km (C) $4$ km (D) $5$ km (E) $6$ km

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