there were 8000 people at a festival. people bought their tickets online, by phone, or in person. based on a random sample of people at the festival, 60% bought their tickets online, 15% bought their tickets by phone, and the rest bought their tickets in person. if 18 people from the random sample bought their tickets by phone, how many people were in the random sample? (please don’t show your work or anything i just need the answer asap)