Two models of a product – Regular (X) and Deluxe (Y) – are produced by a company. A linear programming model is used to determine the production schedule. The formulation is as follows: Maximize...

Extracted text: Two models of a product – Regular (X) and Deluxe (Y) – are produced by a company. A linear programming model is used to determine the production schedule. The formulation is as follows: Maximize profit: 50X + 60Y Subject to: 8X + 10Y < 800="" (labor="" hours)="" x="" +="">< 120="" (total="" units="" demanded)="" 4x="" +="" 5y="">< 500="" (raw="" materials)="" all="" variables="">0 The optimal solution is X = 100 and Y = 0. How many units of the labor hours must be used to produce this number of units? O 400 800 O 500 120