Table 10-2
Quantity of Soup (cups) Total Utility Quantity of Sandwiches Total Utility
1 40 1 45
2 60 2 75
3 72 3 102
4 82 4 120
5 88 5 135
6 90 6 145
Table 10-2 above shows Keira's utility from soup and sandwiches. The price of soup is $2 per cup and the price of a sandwich is $3. Keira has $18 to spend on these two goods.
Refer to Table 10-2. What is Keira's marginal utility per dollar spent on the third cup of soup?
A) 72 units of utility
B) 36 units of utility
C) 12 units of utility
D) 6 units of utility