What is the equation to determine GPM given GPA, MPH, and width W?

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Multiple Choice

What is the equation to determine GPM given GPA, MPH, and width W?

Explanation:
GPM is found by taking how much water you apply per acre and pairing it with how much area you sweep each minute. The area covered per minute depends on your spray width and your travel speed. When the width is in inches and speed is in miles per hour, the area swept per minute in acres simplifies to (width in inches × speed in mph) divided by 5,940. Multiply that by gallons per acre to convert to gallons per minute. So the formula becomes GPM = GPA × MPH × W / 5,940. For example, if GPA is 8 gal/acre, MPH is 4, and width is 20 inches, GPM = 8 × 4 × 20 / 5,940 ≈ 0.108 gal/min. The other forms either omit the division by 5,940 or use a different constant, which would misrepresent the unit conversions between inches, mph, acres, and gallons.

GPM is found by taking how much water you apply per acre and pairing it with how much area you sweep each minute. The area covered per minute depends on your spray width and your travel speed. When the width is in inches and speed is in miles per hour, the area swept per minute in acres simplifies to (width in inches × speed in mph) divided by 5,940. Multiply that by gallons per acre to convert to gallons per minute. So the formula becomes GPM = GPA × MPH × W / 5,940.

For example, if GPA is 8 gal/acre, MPH is 4, and width is 20 inches, GPM = 8 × 4 × 20 / 5,940 ≈ 0.108 gal/min.

The other forms either omit the division by 5,940 or use a different constant, which would misrepresent the unit conversions between inches, mph, acres, and gallons.

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