If, at the beginning of each year, you expect to need working capital equal to 10% of the next (coming) year's sales revenue, what would be the effect on the net present value of the project? Only changes in the amount of working capital require cash flows. Assume a sales price of $10,000 per chopper and a sales quantity of 60 choppers.

Remember that any money invested in working capital (i.e., inventory, accounts receivable, accounts payable) would usually be recovered in its entirety at the end of the project.