waiter work shift problem and Excel file from class. The 24-hour day is divided into 6 shifts (four hours each). We require at least a certain number of waiters during each shift, as follows: shift 1 2 3 4 5 6 minimum required 3 8 12 9 16 4 In class, we found that if each waiter must work two consecutive shifts, then the mininum total number of waiters required is 31. What is the minimum total number of waiters if each waiter must work three consecutive shifts