Felix's utility is u(x, y) = In(x + y) while Maria's utility is u(x, y) = x + y. Felix has an initial endowment of (Wx, Wy)=(6, 10) and Maria has an endowment of (Wx , Wy )=(20, 5). If Px = 1, find the equilibrium demand for Felix and Maria for goods x and y in terms py. Assuming Walras' Law is satisfied, solve for Py