Use the following to answer the questions below:
z is the marginal utility per dollar measured in utils, x is the amount spent on product A, and y is the amount spent on product B.
Assume MUA = z = 40 – x and MUB = z = 84 – 4y.
Assume that the consumer has $40 to spend on A and B; that is, x + y = 40.
What is the marginal utility per dollar? What is best way to allocate the expenditure of the $40?
Please show your work? (can this also be done in excel?)