1. In many industrialized countries, the average inventory turnover index is around 20 for dairy products and around five for household electrical appliances. Discuss these figures.
2. Consider a warehouse equipped with a stacker crane. The longitudinal and latitudinal speeds are 25 cm/sec and 40 cm/sec, while the corresponding aisle length and height are 20 m and 12 m. Supposing that the home position is the left most position at 1 m from floor, compute the maximum waiting time for the completion of a retrieval operation.