A lawn company's standard package of mowing, edging, and trimming costs $20, and the company charges $35 for this service. For a total price of $55, the company will also trim shrubs, a service that adds an additional $10 to the cost of the standard package. What is the company's marginal benet of selling the standard package? 0 $35 0 $20 0 $55 0 $15