Asurvey of 1,150 tourists visiting orlando was taken. of those surveyed: 264 tourists had visited the magic kingdom 273 tourists had visited universal studios 67 tourists had visited both the magic kingdom and legoland 52 tourists had visited both the magic kingdom and universal studios 64 tourists had visited both legoland and universal studios 21 tourists had visited all three theme parks 55 tourists did not visit any of these theme parks how many tourists only visited the legoland (of these three)?