$16.$ Some analysts complain that spreadsheet models

are difficult to resize. You can be the judge of this. Suppose the current product mix problem is changed so that there is an extra resource, packaging labor hours, and two additional PC models, $9$ and $10.$ What additional input data are required? What modifications are necessary in the spreadsheet model $($including range name changes$)?$ Make up values for any extra required input data and incorporate these into a modi$-$ fied spreadsheet model. Then optimize with Solver. Do you conclude that it is easy to resize a spreadsheet model? $($By the way, it turns out that algebraic models are typically much easier to resize.$)$