Columns 1 through 4 in the following table show the marginal utility, measured in utils, that Ricardo would get by purchasing various amounts of products A, B, C, and D. Column 5 shows the marginal utility Ricardo gets from saving. Assume that the prices of A, B, C, and D are, respectively, $18, $6, $4, and $24 and that Ricardo has an income of $106.





Instructions: Enter your answers as a whole number.



a. What quantities of A, B, C, and D will Ricardo purchase in maximizing his utility?




units of A




units of B




units of C




units of D



b. How many dollars will Ricardo choose to save?



$



c. Check your answers by substituting them into the algebraic statement of the utility-maximizing rule.



($
1
×
+ $
×
+ $
×
+ $
×
+ $
) = $