Organic Gardening magazine, describing how to improve your garden's soil, said, "Since a6-incha layer of soil in a100-square-footplot weighs about45,000pounds, adding230pounds of compost will give you an instant5% organicmatter."

Use the correct weight of50 cubic feet of soil to determine the percent increase of organic matter in from adding230

cubic feet of compost. Round to one decimalplace.