The definition of a formula for efficiency is the ability to produce a desired result with a minimum amount of effort, time, or cost. Efficiency is an important concept in business, engineering, and other areas of life. It is a measure of how well a process or system is able to use resources to produce a desired outcome. Efficiency can be measured in terms of time, cost, or quality. A formula for efficiency can be used to calculate the efficiency of a process or system. It is important to consider all of the factors that can affect efficiency when creating a formula. Factors such as the number of resources used, the type of resources used, and the amount of time and effort put into the process can all affect the efficiency of a system. A formula for efficiency can help to identify areas of improvement and optimize processes to increase efficiency.