Gillian is consuming her optimal consumption bundle of pizza...

Gillian is consuming her optimal consumption bundle of pizza and coke. The marginal utility associated with the last slice of pizza she consumes is 3 utils, and the marginal utility associated with the last glass of coke is 6 utils. What must be the relative price of pizza in terms of coke? A 2 B. 1 C. 1/2 D. The relative price is undefined:

[Uses the Marginal Utility Approach] Anita consumes both pizza and Pepsi. The following tables show the amount of utility she obtains from different amounts of these two goods: $$\begin{array}{cc} {}{\quad\quad\quad\quad\quad}{\text {Pizza }} \\ \hline \text { Quantity } & \text { Utility } \\ \hline \text { 4 slices } & 115 \\ \text { 5 slices } & 135 \\ \text { 6 slices } & 154 \\ \text { 7 slices } & 171 \end{array}$$ $$\begin{array}{cc} \quad\quad{}{} {\text { Pepsi }} \\ \hline \text { Quantity } & \text { Utility } \\ \hline 5 \text { cans } & 63 \\ 6 \text { cans } & 75 \\ 7 \text { cans } & 86 \\ 8 \text { cans } & 96 \end{array}$$ Suppose Pepsi costs $\$ 0.50$ per can, pizza costs $\$ 1$ per slice, and Anita has $\$ 9$ to spend on food and drink. What combination of pizza and Pepsi will maximize her utility?

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