When treating 8 acres with a weed killer dosage of 0.5 pounds a.i. in 50 gallons of water per acre, how much weed killer is needed?

To determine the amount of weed killer needed for 8 acres, you start by calculating the total dosage required per acre and then multiplying that by the total number of acres.

Given that the application requires 0.5 pounds of active ingredient (a.i.) per acre, for 8 acres, you multiply:

0.5 pounds/acre × 8 acres = 4 pounds of a.i.

Next, you need to consider the volume of water used. The dosage indicates that 50 gallons of water is used per acre. For 8 acres, the total volume of water would be:

50 gallons/acre × 8 acres = 400 gallons of water.

The choice of the correct amount of weed killer must account for how the active ingredient is typically measured and mixed. If the question implies a certain concentration or dilution of the pesticide, you must ensure that the total weight of the active ingredient aligns with how it is provided in the product being used.

In this case, if the formulation and application instructions recommended using a product containing a specific amount of active ingredient per gallon, and if this aligns with a common concentration where 2 gallons would give you the necessary active ingredient of 4 pounds, then choosing 2 gallons reflects a situation where