Suppose Mary is in consumer equilibrium. The marginal utility of good A is 30, and the price of good A is $2.

a. if the price of good B is $4, the price of good C is $3, the price of good D is $1, and the price of all other goods and services is $5, what is the marginal utility of each goods mary is purchasing?

b. If mary has chosen to keep $10 in savings, what is the ratio of MU to P for savings?

Question

Suppose Mary is in consumer equilibrium. The marginal utility of good  A is 30, and the price of good A is $2.

a. if the price of good B is $4, the price of good C is $3, the price of good D is $1, and the price of all other goods and services is $5, what is the marginal utility of each goods mary is purchasing?

b. If mary has chosen to keep $10 in savings, what is the ratio of MU to P for savings?

anonymous · Answer

If a consumer maximizes, MRS = price ratio. 
Thus, MRS ( AB) = MU(A)/MU(B) = 2/4 = 1/2 
Thus, MU (b) = 60 

MU for saving = 150. MU/P = 15.