1.1. Lucinda and Kyle each consume 3 comic books and 6 video games. Lucinda’s marginal rate of substitution of books in place of games is 2 and Kyle’s is 5.

a. For each person, find another consumption bundle that yields the same total utility as the current bundle. Who is less willing to trade games for books? In a diagram with books on the horizontal axis and games on the vertical axis, how would this be reflected in differences in the slopes of their indifference curves at their current consumption bundles?

b. Find the relative price of books in terms of games at which Lucinda’s current bundle is optimal. Is Kyle’s bundle optimal given this relative price? If not, how should Kyle rearrange his consumption?