How much formulation should you add to the tank to make 50 gallons of finished spray, if the label calls for 3 pounds of formulation per 100 gallons of water?

To determine how much formulation to add to the tank in order to make 50 gallons of finished spray, you should first calculate the amount needed based on the label's recommendation of 3 pounds of formulation per 100 gallons of water.

Since the application rate is given for 100 gallons, you can use a proportion to find out how much formulation is required for just 50 gallons. Specifically, you can calculate it through a simple ratio:

• If 3 pounds is needed for 100 gallons, then for 50 gallons, you set up the following calculation:

[ \text{Amount for 50 gallons} = \left( \frac{50 \text{ gallons}}{100 \text{ gallons}} \right) \times 3 \text{ pounds} = 0.5 \times 3 \text{ pounds} = 1.5 \text{ pounds}. ]

Therefore, you should add 1.5 pounds of formulation to the tank to achieve the desired 50 gallons of finished spray. This calculation ensures that the application remains consistent with the label's recommendations, effectively maintaining the efficacy of the product while also adhering to safety and regulatory guidelines.