A fertilizer with 24-0-8 has 24% nitrogen. How many pounds of product per 1000 sq ft are needed to deliver 0.15 lb of nitrogen?

• A. 0.63 pounds per 1000 sq ft (approximately 0.63 lb).
• B. 0.15 pounds per 1000 sq ft.
• C. 0.30 pounds per 1000 sq ft.
• D. 2.50 pounds per 1000 sq ft.

Answer: (A)

Figuring out how much product to apply relies on the fertilizer’s nitrogen percentage. If a product is 24% nitrogen, that means 0.24 pounds of nitrogen are in every 1 pound of product. To deliver 0.15 pounds of nitrogen, solve for the amount of product x in the equation 0.24 × x = 0.15. The result is x = 0.15 / 0.24 = 0.625 pounds of product per 1000 square feet. Rounding gives about 0.63 pounds per 1000 sq ft. This makes sense because multiplying 0.63 by 0.24 yields roughly 0.15 pounds of nitrogen, matching the target.