How many minutes of spraying time are needed to spray out 147 gallons if the aircraft sprays 20.2 gallons per minute?

To determine how many minutes of spraying time are needed to spray out 147 gallons when the aircraft sprays 20.2 gallons per minute, you can use the formula:

Time (minutes) = Total gallons to spray / Gallons per minute.

Substituting the values into the formula gives:

Time = 147 gallons / 20.2 gallons per minute.

When you perform the division, you find that:

Time ≈ 7.263.

Rounding this to one decimal place provides a result of approximately 7.3 minutes. Therefore, the correct answer is that it takes approximately 7.3 minutes to spray out 147 gallons at the given rate. This calculation is important in aerial applications to ensure effective planning and timing in the spraying process.