PK 2020 Q8
8. 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

Pink Kangaroo 2020, Question 8. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: A 2 km
The first signpost shows that Betown is 4 km from Atown. The second signpost is 6 km from Atown, so must be 2 km from Betown.
Solution © UK Mathematics Trust, from the PK 2020 solutions.