Structural Pest Control Applicator Practice Exam

When filling a 50-gallon tank, how much emulsifiable concentrate should you add if you use 3 pints per 100 gallons?

1. 1 pint

2. 1.5 pints

3. 2 pints

4. 2.5 pints

The correct answer is: 1.5 pints

To determine how much emulsifiable concentrate to add when filling a 50-gallon tank, start by understanding the dilution rate provided: you need 3 pints of concentrate for every 100 gallons of water. First, calculate the amount of concentrate needed for the 50-gallon tank. Since the relationship is linear, you can set up a ratio. If 3 pints are needed for 100 gallons, then for 50 gallons (which is half of 100 gallons), the amount of concentrate required is also half of 3 pints. When you divide 3 pints by 2, you find that you will need 1.5 pints of emulsifiable concentrate for a 50-gallon tank. This proportional reasoning is essential in pesticide application since accurate measurements ensure effective pest control while minimizing risks to non-target organisms and the environment. Understanding this calculation method helps in future scenarios where you might need to adjust volumes for different tank sizes or pesticide concentrations.