Riggs Company purchases sails and produces sailboats. It currently produces 1,290 sailboats per year, operating at normal capacity, which is about 80% of full capacity. Riggs purchases sails at $253 each, but the company is considering using the excess capacity to manufacture the sails instead. The manufacturing cost per sail would be $92 for direct materials, $86 for direct labor, and $90 for overhead. The $90 overhead is based on $78,690 of annual fixed overhead that is allocated using normal capacity. The president of Riggs has come to you for advice. It would cost me $268 to make the sails, she says, but only $253 to buy them. Should I continue buying them, or have I missed something?

(a)

Prepare a per unit analysis of the differential costs. (Enter negative amounts using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).)

		Make Sails		Buy Sails		Net Income Increase (Decrease)
Direct material		$		$		$
Direct labor
Variable overhead
Purchase price
Total unit cost		$		$		$

Should Riggs make or buy the sails?

Riggs should buymake the sails.