What question does the concept of "Days of supply" answer?

The concept of "Days of supply" is a critical metric in inventory management that quantifies how many days the current inventory will last given the current rate of demand. This metric is essential for companies to understand their inventory levels in relation to future sales and to make informed decisions about purchasing and production.

When you know your days of supply, you can assess whether you have enough inventory to meet customer demand over a specified period. It allows businesses to maintain optimal inventory levels and avoid stockouts or excessive carrying costs. Therefore, the chosen answer, which relates directly to the duration that current inventory will last, aligns perfectly with the purpose of measuring "Days of supply."

This metric does not directly address how much inventory needs to be purchased, the quality of the inventory, or the lead time for delivery. Instead, its primary focus is on the sustainability of the existing stock in relation to demand, making it crucial for effective supply chain management.