Ali the trainer has two solo workout plans that he offers his clients: Plan A and Plan B. Each client does either one or the other (not both). On Monday there were 3 clients who did Plan A and 5 who did Plan B. On Tuesday there were 12 clients who did Plan A and 2 who did Plan B. Ali trained his Monday clients for a total of 7 hours and his Tuesday clients for a total of 19 hours. How long does each of the workout plans last?