Assume that we have a fixed supply of a depletable resource to allocate between two periods. Assume further that the demand function is constant in the two periods, the marginal willingness to pay is given by the formula P = 16 -0.3q, and marginal cost is constant at $3 per unit. The total supply is 11 units. What percent of the total should be consumed during the first period if the discount rate is 2%?