Atkinson Better Living Company (ABLC) is planning to add a rechargeable bladeless portable fan to its line of products. ABLC runs a single shift daily which has 8 productive hours after deducting all breaks. Demand for these fans is expected to be 384 units daily. The process of making these bladeless portable fan is broken down into 12 work elements (tasks) and is to be organized as an assembly line. The precedence relationships and time requirements of each element are as follows