Banana Computer Company has fixed costs of production of $100,000, while each unit costs $600 of labor

Question:

Banana Computer Company has fixed costs of production of $100,000, while each unit costs $600 of labor and $400 of materials and fuel. At a price of $3000, consumers would buy no Banana computers, but for each $10 reduction in price, sales of Banana computers increase by 1000 units. Calculate marginal cost and marginal revenue for Banana Computer, and determine its monopoly price and quantity.