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).We can see by the equation above that the carrying cost of inventory can be reduced by reducing the size of Q. This is usually achieved by reducing the amount of capital invested in inventory, as well as the space and expense required to store it.e can determine the ordering cost by calculating the number of orders in a year, and multiply this by the cost of each order. To determine the number of orders we simply divide the total demand (D) of units per year by Q, the size of each inventory order. D=Total demand (units). Q=Inventory order size (quantity).