What is the active ingredient content in a 20-pound bag of 25W formulation?

To determine the active ingredient content in a 20-pound bag of a 25W formulation, it is essential to understand what the "25W" designation signifies. The "25" refers to the percentage of active ingredient in the formulation, which means that 25% of the total weight is constituted by that active ingredient.

In a 20-pound bag, calculating the amount of active ingredient involves finding 25% of 20 pounds. This can be done with the following calculation:

25% of 20 pounds = 0.25 x 20 = 5 pounds.

Thus, the active ingredient content in a 20-pound bag of a 25W formulation is indeed 5 pounds. This is why the choice indicating 5 lbs is the correct answer.

Understanding this calculation can assist in similar questions regarding formulations, as it’s a common way to represent concentrations in the context of regulatory practices and compliance with agricultural and chemical product directives.