Answer:
Social Marginal Benefit = 10000
Net Social Marginal Benefit = 0
Explanation:
For Public Goods, Marginal benefit to each consumer is reflected within their willingness to pay for the public good.
Marginal Benefit (Willingness to pay) = 100 for 100 people, 0 for 150 people
So, Marginal Benefit = (100) (100) + (150) (0)
= 10,000
Marginal Cost of the public good space = 10000 [Given]
Net Social Marginal Benefit = Marginal Benefit - Marginal Cost
= 10,000 - 10,000
= 0