Sam's Skateboard Company produces skateboards that are custom-built to user specifications. No two skateboards are alike. The overall manufacturing sequence for a skateboard is divided into three main phases-part fabrication, assembly, and testing. The company currently operates two production lines in its main factory (shown below). Line one has one part fabrication station, two assembly stations, and one testing station. Line two has one part fabrication station, one assembly station, and one testing station. Each station has capacity 1. The processing time (in hours) for a single skateboard at each station is shown in the diagram below. Assuming there is an infinite supply of skateboard orders and there are sizable buffers between each pair of stations for storing work in process (WIP), about how often, on average, will a finished skateboard arrive at the destination? Write your answer in the following form: "Every X hours." Is there a way that overall throughput can be increased by relocating employees to different stations in the factory (i.e. by swapping numbers vertically (but not horizontally) to different boxes in the diagram but not changing the locations of the arrows or boxes)? Explain