Well, I assume that both tickets cost the same: let's call it x.
So the tickets cost 106%x (the cost of the ticket plus tax).
The total prize of the tickets will be: 2*106% x+20.
But let's assume that you share it half-half: then each of you pays half of this:
So, this is how much each of you pays: 1.06x+10
So the tickets cost 106%x (the cost of the ticket plus tax).
The total prize of the tickets will be: 2*106% x+20.
But let's assume that you share it half-half: then each of you pays half of this:
So, this is how much each of you pays: 1.06x+10