Problem 3 (10 marks in total). (On the classical Leontief Economic Model) The Country Vasilie, whose national currency is the roubelon (r.), can export vehicles, steel and coal at the following prices: Vehicules Steel Coal 15,000 r/vehicule 1,000 r/ton 800 r/ton Making 1 vehicle requires 0.4 tons of steel, 0.5 tons of coal and 1,000 hours of labor. Making 1 ton of steel requires 0.1 vehicles, 0.7 tons of coal and 100 hours of labor. Making I ton of coal requires 0.1 vehicles, 0.05 tons of steel and 200 hours of labor. The country has 1 million hours of labor available and wants to maximize its export revenues. Formulate a linear program for Vasilie's problem. (Hint: offer (production) should exceed demand (production requirements + exports))