The demand for the services provided by the Tikho Marina in Novorossiysk is Q = 100 − 2P and the marginal cost of providing these services is MC = −110 + 2Q, where Q is the number of yachts in the marina. Assume that all yachts require the same services. If a two-part tariff pricing system is used,

1. what is the optimal daily entry fee for the marina?

2. how many yachts will visit the Tikho Marina?