A consumer of a single commodity is in equilibrium when
A. he can equate his demand with price B. he equates marginal utility and price C. he can equate his marginal and total utilities D. his marginal utility is equal to zero
Correct Answer: B
Explanation
A consumer is in equilibrium when the marginal utility equal to the price of the commodity i.e MUx = Px. Where : X = the commodity MU = Marginal utility P = price of the commodity Therefore, a consumer who consume a single commodity such as apple will be at equilibrium when MUa = Pa
