A farmer bought a 50kg of fertilizer with an inscription NPK 15:15:15.
(a) what is the name of the fertilizer?
(b) name 3 nutrients the fertilizer can supply to the soil.
(c) what is the percentage of the actual nutrients in the 50kg bag of the fertilizer?
1. Go to https://www.duckduckgo.com or https://www.google.com
2. Type in NPK 15:15:15
3. Press the Enter key.
4. Read, read, read.
To answer these questions, we need to understand the meaning behind the inscription "NPK 15:15:15."
(a) The name of the fertilizer can generally be determined by the "NPK" part of the inscription, which stands for the three key macronutrients found in fertilizers: Nitrogen (N), Phosphorus (P), and Potassium (K). The numbers following each letter represent the percentage of that nutrient in the fertilizer.
(b) Based on this information, we know that the fertilizer can supply three nutrients to the soil: Nitrogen (N), Phosphorus (P), and Potassium (K). These are essential for plant growth and development.
(c) To find the percentage of each actual nutrient in the 50kg bag of fertilizer, we need to use the information given. In this case, the "15:15:15" inscription tells us that each nutrient is present in equal proportions, with a percentage of 15 for Nitrogen (N), Phosphorus (P), and Potassium (K).
To calculate the percentage of each nutrient in the 50kg bag, we multiply the weight of the bag by the percentage of each nutrient:
Nitrogen (N): 50kg x (15/100) = 7.5kg
Phosphorus (P): 50kg x (15/100) = 7.5kg
Potassium (K): 50kg x (15/100) = 7.5kg
Therefore, the bag contains 7.5kg of Nitrogen (N), 7.5kg of Phosphorus (P), and 7.5kg of Potassium (K), making up a total of 22.5kg of nutrients in the 50kg bag.
Note: It's important to remember that while the inscription indicates the percentage of the primary nutrients in the bag, there may be other secondary or micronutrients present as well.