A real estate company is going to build a new residential complex. The land they have purchased can…

A real estate company is going to build a new residential complex. The land they have purchased can hold at the most 500 apartments. Also, if they make $x$ apartments, then the monthly maintenance cost for the whole complex would be as follows: Fixed cost = ₹ 4000 Variable cost = ₹ $(14x - 0\cdot 04x^2)$ How many apartments should the complex have in order to minimize the maintenance costs? (Application)