Pest Control Aircraft Pilot Practice Test

If a helicopter's nozzles collect 1700 ounces of material in 90 seconds, what is the flow rate in gallons per minute?

1. 6.5 gallons per minute

2. 8 gallons per minute

3. 8.85 gallons per minute

4. 10 gallons per minute

The correct answer is: 8.85 gallons per minute

To determine the flow rate in gallons per minute from the amount of material collected, the first step is to convert the collected ounces into gallons and then calculate the flow rate based on the time taken. 1. **Convert ounces to gallons**: There are 128 ounces in a gallon. Given that the helicopter's nozzles collected 1700 ounces, the conversion to gallons can be calculated as follows: \[ \text{Gallons} = \frac{1700 \text{ ounces}}{128 \text{ ounces per gallon}} \approx 13.28125 \text{ gallons} \] 2. **Determine the time in minutes**: The time taken to collect this amount was 90 seconds. To convert seconds into minutes: \[ \text{Minutes} = \frac{90 \text{ seconds}}{60 \text{ seconds per minute}} = 1.5 \text{ minutes} \] 3. **Calculate the flow rate**: The flow rate in gallons per minute can now be calculated by taking the total gallons collected and dividing it by the total time in minutes: \[ \text{Flow rate (gpm)} = \frac{13.