Economics contributes a great deal with towards the performance of managerial duties and responsibilities. Just as biology donates to the medical profession and physics of engineering, economics contributes to the managerial occupation. All other qualifications being the similar, managers with a working knowledge of economic can perform their functions more effectively than those without it. The basic functions of the managers of a business firm are to achieve the objective of the firm to the maximum possible extent with the limited resources placed at their disposal. The emphasis here is one the maximization of the objective and limited of the resources. Had the resources been limitless, such as sunshine and air, the problem of economizing on resources or resource management would have never arisen. But resources, how so ever defined are limited. Resources at the disposal of a firm, whether finance, men or material, are by all means limited. Therefore the basic task of the management is to optimize the use of the resource.