The little law provides a simple and intuitive approach for the assessment of the efficiency of queuing systems. Little's Law tells us that; Throughput time (TH) = Work in progress (WIP) x Cycle Time (CT) Where; Throughput time (TH) = time taken for inputs (WIP) to move through the system Work in progress (WIP) = Items in the process at one time (average) Throughput rate (1/CT) = rate at which items emerge from the system Cycle time (CT) = reciprocal of the throughput rate, time to process each item Think about (or better still, visit) the company (e.g., a sandwich shop, a small coffee shop) to complete the group project. Your team wants to know the average number of customers queuing in the shop, to decide whether you need to add more space to accommodate more customers. For example On average, how many customers arrive at the shop every hour? On average, how long does a customer spend in the store? What actions could the operations manager take to improve their operations performance