Engineering work: $450$ hours, $$\frac{45}{?}$ hour. $($Although the work decreases by $450$ hours, the engineer assigned to the track assembly line also spends time on other products, and there would be no reduction in his salary.$)$

$75$ fewer material moves at $$30$ per move.

Required:

Ignore the special study, and determine whether the track assembly should be produced internally or purchased from the supplier.

Produced internally $$

Now, using the special study data, repeat the analysis.

It is $ expensive to buy outside.

$3.$ Which of the listed items is not a qualitative factor that would affect the decision? $q,$

$4.$ After reviewing the special study, the controller made the following remark: "This study ignores the additional activity demands that purchasing would cause. For example, although the demand for inspecting the pe$$f$.$t on the production floor decreases, we may need to inspect the incoming parts in the receiving area. Will we actually save any inspection costs?" Is the controller right?