Agronomy Degree Practice Exam

To determine the correct amount of Karate Z to apply per acre, it is essential to understand how to calculate the total amount of the product needed based on its concentration of the active ingredient. The product contains 22.8% active ingredient, which means that in every pound of Karate Z, 22.8% of that weight is the active ingredient.

To find out how much Karate Z is needed to achieve the desired application rate of 0.03 lbs of active ingredient per acre, the following calculation is used:

1. Divide the desired amount of active ingredient (0.03 lbs) by the percentage of active ingredient in the product (22.8%, or 0.228 as a decimal).

So, the calculation would be:

\[

\text{Amount of Karate Z} = \frac{0.03 \text{ lbs of active ingredient}}{0.228}

\]

2. Performing the division provides:

\[

\text{Amount of Karate Z} \approx 0.1316 \text{ lbs}

\]

Rounding this value appropriately leads to approximately 0.13 lbs of Karate Z per acre. Therefore, it is correct to apply about 0