Organic Gardening magazine, describing how to improve your garden's soil, said, "Since a 6-inch layer of soil in a 100-square-foot plot weighs about 45,000 pounds, adding 230 pounds of compost will give you an instant 5% organicmatter."

Use the correct weight of 50 cubic feet of soil to determine the percent increase of organic matter in from adding 230 cubic feet of compost. Round to one decimalplace.

Percentincrease: