Joyce, Michael, Nikki, and Ryn have a favorite movie. Joyce's favorite movie is 2 hours longer than Michael's movie. Nikki's movie is three times as long as Michael's movie, and Ryn's favorite movie is 4/5 times as long as Nikki's favorite movie. If Nikki's favorite movie is 30 hours long, calculate the total number of hours of their favorite movies together. Let's think first. Chain of thought:
Since Nikki's favorite movie is 30 hours long, Ryn's favorite movie is 4 / 5 * 30 = 24 hours long. The total number of hours for Nikki's and Ryn's favorite movies is 24 + 30 = 54 hours long. Nikki's movie is also three times as long as Michael's favorite movie, meaning Michael's favorite movie is 30 / 3 = 10 hours long. Together, Nikki, Ryn, and Michael's favorite movies are 54 + 10 = 64 hours long. If Joyce's favorite movie is 2 hours longer than Michael's favorite movie, then her favorite movie is 10 + 2 = 12 hours long. The length of Nikki, Ryn, Michael, and Joyce's favorite movies is 64 + 12 = 76 hours.
Therefore, the answer is 76.