A golf course has frequent players whose demand is Qf = 260 - 0.4P and infrequent players whose demand is Qi = 10 - 0.1P. Combined market demand is Q = 34 - 0.4P. The marginal cost and average total cost of providing a round of golf are $20. Discuss how much higher will profit be if the golf course uses third-degree price discrimination instead of charging all golfers the same price?