Some foreign tourists were interviewed at the airport before they leave Philippines after their vacation. They were asked about what do they like to the place they have visited. According the survey there are 37 who likes the foods served, 43 who likes the people's hospitality, and 45 who likes the beautiful scene of the place. Out of the surveyed tourists, there are 20 who likes both the food and the people, 27 who likes both the people and the scene, and 23 who likes both food and the scene. If there are 10 tourists who like the food, the people and the scene and there 5 who are not satisfied as they don't like the food, the people and the scene of the place, how many tourists were interviewed?