Abstract Frequently, the decision to replace or not to replace a plant asset is handled as a separate problem and is not included as a part of the general capital investment problem. This separation has probably resulted in part from the attention given to replacement decisions in engineering economy studies. Engineering studies are made to determine which units of equipment can give the best service at the lowest possible costs. Equipment in operation is in constant competition with new and improved models as they become available on the market and at some point in the life of a piece of equipment replacement may bring about the desired performance at a minimum annual cost. The objective in many replacement studies is to time the replacements so that annual costs will be minimized. The replacement type of decision is also isolated from general capital investment planning because of a difference in point of view that may be attributable to a difference in the level of administrative control. In replacement studies the equipment cost, the future costs of operation and the future salvage values are carefully estimated and applied in an effort to hold costs to a minimum.

Abstract A graph similar in concept to the conventional profit-volume graph can be used in capital investment planning and can be especially useful in the analysis of relatively complex investment situations. The net discounted cash flow line for the most profitable investment candidate crosses the expected cost of capital line or zone at the highest point. In a large number of investment situations, this line will also cross the internal rate of return line at the highest discount rate and will be above all other discounted cash flow lines at all points. There are also investment situations in which the discounted cash flow lines for the various alternatives will cross. The line for the most profitable alternative does not necessarily lie to the right of the other lines when it crosses over the internal rate of return line. It will, however, be the highest line when it crosses the expected cost of capital line or zone. The line of limitation can be used to predict the cost within reasonable limits.

Reviews the book "Advanced Accounting, an Organisational Approach," by Norton M. Bedford, Kenneth W. Perry and Arthur R. Wyatt.

Reviews the book "Management Accounting," by Robert N.Anthony.