Editing Utility maximization problem (section)

=== 2) 'Bang for buck' ===

[[Bang for the buck|Bang for buck]] is a concept in utility maximization which refers to the consumer's desire to get the best value for their money. If Walras's law has been satisfied, the optimal solution of the consumer lies at the point where the budget line and optimal indifference curve intersect, this is called the tangency condition.<ref name=":0">{{Cite book|last=Board|first=Simon|title=Utility maximization problem|publisher=Department of economics, UCLA|year=2009|pages=10–17}}</ref> To find this point, differentiate the utility function with respect to x and y to find the marginal utilities, then divide by the respective prices of the goods.

<math> MU_x/p_x = MU_y/p_y</math>

This can be solved to find the optimal amount of good x or good y.