Lisa White consumes only two goods X and Y. Column 1 of Table A shows the marginal utility she derives from various units of X. Column 2 shows the marginal utility she derives from various units of Y. Her income is $20, the price of X is $2 and, and the price of Y is $4. Use Table A to answer the following questions:
a. Explain how much of X and Y will Lisa White demand?
b. Check out your answer by using the consumer equilibrium conditions. (Is all income spent? Does MUx/Px = MUy/Py?)