Answer:
30
Explanation:
Data provided in the question
Total utility consuming the 2 widgets = 240
Total utility consuming the 3 widgets = 270
So by considering the above information, the marginal utility of consuming the third widget is
= Total utility consuming the 3 widgets - Total utility consuming the 2 widgets
= 270 - 240
= 30
Basically we deduct the total utility consumes 2 widgets from the total utility consumes 3 widgets
