Suppose a small community of 200 people want to save a rare Toad. Each person has a willingness-to-pay function of P = 2.5 -2.0Q, where P is the per-Toad price that she or he is willing to pay to save Q rare Toads. To save a Toad, they must capture it and tag it. To do so, the marginal cost is estimated to be $100 per toad. How many toads would they save if they are trying to maximize the net benefits?