Structural Pest Control Applicator Practice Exam

If thirty-two ounces of water are collected from a spray nozzle in 30 seconds, what is the delivery rate in gallons per minute?

1. 0.03 GPM

2. 0.5 GPM

3. 1.2 GPM

4. 2.5 GPM

The correct answer is: 0.5 GPM

To determine the delivery rate in gallons per minute, we start by converting the volume of water collected from ounces to gallons. Since there are 128 ounces in a gallon, we can calculate how many gallons are in 32 ounces: 32 ounces ÷ 128 ounces/gallon = 0.25 gallons. Next, we need to calculate the delivery rate per minute. The water was collected in 30 seconds, which is half a minute. To find the rate per minute, we multiply the volume collected in gallons by the number of these intervals in a minute: 0.25 gallons collected in 30 seconds means in one minute, we would collect double that amount: 0.25 gallons × 2 = 0.5 gallons per minute (GPM). Thus, the delivery rate is correctly identified as 0.5 GPM.