First u divide 39.39 to 3 and u get 13.13 so it is already rounded u dont need to round<span />
The answer to your question is 40.
After you've calibrated the sprayer to know your application rate in gallons per acre, divide that number into the gallons applied with each tankful to find how many acres each tankful covers. Then, multiply the acres per tank by the herbicide needed per acre to find the herbicide to put in each tankful.
Mark me as brainliest please
