Sprayer Help

Bought a new three point 200 gallon sprayer with 20’ booms. Nozzles are spaced 16”. Performed calibration test and 255’ for 16” nozzles was 39 seconds. Checked nozzle output it was 20 ounces in 39 seconds which should be 20 gallons per acre. So if I wanted to spray weed master at 4 pints per acre I would mix 2.5 gallons for every 100 gallons? Is my math right?

Sprayer Help