You make decorative stones for landscaping. A ton of coarse stones requires 2 hours of crushing, 5 hours of sifting, and 8 hours of drying. A ton of fine stones requires 6 hours of crushing, 3 hours of sifting, 2 hours of drying. The coarse stones sell for $400 per ton. The fine stones sell for $500 per ton. In a work week your plant is capable of 36 hours of crushing, 30 hours of sifting, an 40 hoursof drying. How much of each should you produce to maximize revenue?