1. Joy has a budget of $21 to purchase buns and tarts. A tart cost $3 and a bun is $4

1. Complete the table below:

Quantity of Tart	Total Utility	Marginal Utility	Marginal Utility per Dollar		Quantity of Bun	Total Utility	Marginal Utility	Marginal Utility per Dollar
0	0				0	0
1	21				1	28
2	36				2	48
3	48				3	64
4	57				4	76
5	63				5	84

1. What combination of bun and tart would maximise her utility?_______________________