While it is not uncommon for the precise source of chest wall pain to remain unknown, some possible causes of costochondritis include: 1  Injury or trauma: Pain within the area of the chest wall may emerge as the result of a direct blow or injury to the area. Arthritis: Some evidence has suggested that symptoms of costochondritis are associated with degenerative joint conditions, such as osteoarthritis or rheumatoid arthritis.
In retail, unit price is the price for a single unit of measure of a product sold in more or less than the single unit. The unit price tells you the cost per pound, quart, or other unit of weight or volume of a food package. It is usually posted on the shelf below the food.
Unit Price. Students learn that the unit price is the cost per unit, and to find the unit price, divide the price by the number of units. For example, to find the unit price of 16 ounces of soup that costs $3.20, divide $3.20 by 16 ounces, to get $0.20 per ounce. Students are also asked to determine which of two given items is a better buy, by finding the unit price of each item, then comparing the unit prices.