IKMC 2021 - Grades 5-6 - Set 2 - Self-study Question 12

The map shows stations A, B and C. The tours A–Zoo–Port–A, B–Park–Zoo–B and C–Port–Park–C are 10 km, 12 km and 13 km. The tour Zoo–Park–Port–Zoo is 15 km. How long is the shortest tour A–B–C–A?