Re: A merchant paid $300 for a shipment of x identical calculators.

The average price of the cost of the x calculators is 300/x dollars. (x - 2) calculators were sold for 300/x + 5 dollars each, for a total revenue of: (x - 2)(300/x + 5) = 300 + 5x - 600/x - 10 = (300x - 600)/x + 5x - 10 Since the total revenue from the sale of the calculators was $120 more than the...