What blend will provide a suitable solution at minimal costs? Formulate mathematical models AND solve the problem Premium loam is 60% soil and 40% domestic manure and costs $5/50 lb. Generic loam is 20% soil and 10% domestic manure (and 70% sand, stone, etc.) and costs $1/50 lb. We need loam for our backyard that is at least 36% soil and at least 20% domestic manure. What combination of the two loams should we use to minimize costs