1.I am due south of Tulla, on the straight east-west highway between Dudden and Brent, an exact number of kilometres from each. I'm just 19 kilometres nearer to Brent than Dudden is from Tulla, but 11 kilometres further from Dudden than Tulla is from Brent. How far am I from Tulla?

22 kilometres from Tulla

18 kilometres from Tulla

15 kilometres from Tulla