The theory of consumer's behavior seeks to explain the determination of consumer's equilibrium. Consumer's equilibrium refers to a situation when a consumer gets maximum satisfaction out of his given resources. A consumer spends his money income on different goods and services in such a manner as to derive maximum satisfaction. Once a consumer attains equilibrium position, he would not like to deviate from it. Economic theory has approached the problem of determination of consumer's equilibrium in two different ways:
(1) Cardinal Utility Analysis and
(2) Ordinal Utility Analysis Accordingly, we shall examine these two approaches to the study of consumer's equilibrium in greater defait.