Platinum and Iridium plugs perform at a lower level than copper spark plugs, because they are less conductive and they tend to overheat. However, the overall longevity of these two types of metal is better than copper plugs.
Carrying cost of inventory is often described as a percentage of the inventory value.This percentage could include taxes, employee costs, depreciation, insurance, cost to keep items in storage, opportunity cost, cost of insuring and replacing items, and cost of capital that help produce income for a business.Also referred to as inventory cost.his percentage could include taxes, employee costs, depreciation, insurance, cost to keep items in storage, opportunity cost, cost of insuring and replacing items, and cost of capital that help produce income for a business. Also referred to as inventory cost.
The total inventory cost for a year for a business is simply the sum of the carrying cost and the ordering cost. The total inventory cost formula is below, and the total inventory cost calculator can be found on this website.C=Carrying cost per unit of inventory. Q=Inventory order size (quantity).he cost of carrying inventory can be calculated by multiplying the cost of carrying a unit of inventory by the average number of units carried, usually for a year. If inventory is used at a steady pace, and restocked when empty, then the average number of units held would be the order size divided by 2.