SoCal
Hollywood
To answer your first question, Expand Ltd has net operating expenses of $132m including depreciation of $22m, so its cash operating expenses are $110m. Now if the company goes ahead with the new product line "the marketing manager still believes the new product range will compete with and reduce existing sales volumes by 10%". Now because 100% of sales must contribute toward 100% of operating expenses, 10% of sales must contribute 10% of operating expenses (or $11m). Therefore, the new product range will reduce cash operating expenses by $11m.
To answer your second question, $15m of raw material stock is purchased each year but the first $15m is purchased immediately and is included in the initial $250m outlay. So then you have $15m cash outlay for raw materials stock at the end of the fist year and again at the end of the second, third and fourth year but not at the end of the fifth year because the machinery is expected to last for only five years. However, he just included the $15m in raw material stock purchases for five years as part of the (-$24m + $11m -$18) = -$31m per year calculation for simplicity. So because there is no $15m cash outlay for raw materials stock at the end of the fifth year, you have to add this back on.
I hope that explains everything. I tried to explain it as clearly as I could but if I am not making any sense just ask again. For what it is worth, I think that he didn't really explain himself very well in a few parts.
To answer your second question, $15m of raw material stock is purchased each year but the first $15m is purchased immediately and is included in the initial $250m outlay. So then you have $15m cash outlay for raw materials stock at the end of the fist year and again at the end of the second, third and fourth year but not at the end of the fifth year because the machinery is expected to last for only five years. However, he just included the $15m in raw material stock purchases for five years as part of the (-$24m + $11m -$18) = -$31m per year calculation for simplicity. So because there is no $15m cash outlay for raw materials stock at the end of the fifth year, you have to add this back on.
I hope that explains everything. I tried to explain it as clearly as I could but if I am not making any sense just ask again. For what it is worth, I think that he didn't really explain himself very well in a few parts.