A company normally sells its product for $20 per unit, which includes a profit margin of 25%. However, the selling price has fallen to $15 per unit. This company's current inventory consists of 200 units purchased at $16 per unit. Replacement cost has now fallen to $13 per unit.
Introduction. A goitre (sometimes spelt  goiter ) is an abnormal swelling of the thyroid gland that causes a lump to form in the neck. There can be many possible causes, including an under-or overactive thyroid gland, iodine deficiency and, rarely, thyroid cancer (see below).ntroduction. A goitre (sometimes spelt  goiter ) is an abnormal swelling of the thyroid gland that causes a lump to form in the neck. There can be many possible causes, including an under-or overactive thyroid gland, iodine deficiency and, rarely, thyroid cancer (see below).
Causes. Worldwide, the most common cause for goitre is iodine deficiency, usually seen in countries that do not use iodized salt. Selenium deficiency is also considered a contributing factor. In countries that use iodized salt, Hashimoto's thyroiditis is the most common cause. Goitre can also result from cyanide poisoning; this is particularly common in tropical countries where people eat the cyanide-rich cassava root as the staple food.