Mark used 50% of tickets on rides, 1/3 of tickets on video games and the rest in batting cages. Did he use 10% of the tickets in batting cages?

Well if you turn 1/3 of the tickets (Video Games) into a percent then you get 33.33%. Added to the extra 50% (Rides) then you have 83.33%. With the information we have here, Mark infact used 10% of his tickets on batting cages.