The inefficiency refers to the absence of efficiency : the ability to have something, and to make use of it, to achieve a result. Efficiency is linked to using rationally the means available to achieve a goal.
Therefore, if efficiency refers to meeting a objective with the minimum possible use of resources and in the less time , inefficiency assumes the opposite.
Suppose an inventor makes two cars. He car A consume 1 liter of fuel to travel 10 kilometres ; he car B , 4 liters to complete the same distance. This means that, put to make a journey of 100 kilometers, the car A will spend 10 liters of fuel while car B will consume 40 liters . Car B, in short, needs four times more fuel than Car A, which demonstrates its inefficiency as for this kind of consumption .
Take the case of a great manager company You must manage a millionaire budget. The company, assuming the executive, did not have debts. However, two years later, it is indebted and did not register any growth in the period. Faced with this reality, the manager is fired for his inefficiency to manage the firm's resources.
It is important not to confuse efficiency with effectiveness : efficiency is associated with the good use of resources and the results achieved; effectiveness, on the other hand, refers to the level of the results obtained over time. Taking the example of cars, both are effective if they can move people from one place to another, but the car B It evidences its inefficiency by the resources it demands to fulfill that end.