Final answer:
APD, or Automated Payment Deposits, typically take an average of forty-five days according to historical reports, but variations in the duration have been noted in other studies.
Step-by-step explanation:
The length of time Automated Payment Deposits (APD) take can vary. According to sources, the reported average time for APD transactions is about forty-five days, as mentioned by Willcocks in 1913. However, it's important to note that other durations for APD have been reported. For instance, Barois in 2010 mentioned different timeframes for APD processes.