Irregular Distances
Let us say there are train stations named A, B, C, D, and E. Here are the conditions: The distance between A and B is 10 km, the distance between B and C is 9 km, the distance between C and D is 8 km, and the distance between D and E is 13 km. If the distance between A and E isn't 40 km, then how much is the distance?
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1 solution
The truth behind the distances is that here is the order of stations: A-B-E-C-D... Adding the distance between A and B (which is 10 km) and solving for the distance between B and E (which is 4 km) sums up 14 km.