Problem #$4(15$ points$)$

Five machines will constitute a GT cell. The from$$to data for the machines are shown in the table

below. $($a$)$ Determine the most logical sequence of machines for this data, and construct the

network diagram, showing where and how many parts enter and exit the system. $($b$)$ Compute the

percentages of in$-$sequence moves, bypassing moves, and backtracking moves in the solution.