The sales of a magazine are given by the function V = 1000C^0.6 N^0.5, where V is sales,

and C and N are two types of articles she publishes (C is the number of C articles, and N is the

number of N articles). The cost of producing a type C item is $ 400, while the

cost of producing an item of type N is $ 10. The company has a budget of $ 11,000 for its

expenses, and cannot exceed this budget. Find the values of C and N that the company will choose

in order to maximize sales (V).