The correct answer is 16.7
Hope this helped :)
Well, bearing in mind that, a year has 12 months, so 18 months is really just 18/12 of a year, or 3/2 a year, then
Is simply the quotient from 2 ÷ 9, so each one gets 2/9 of a gallon, which is about 57 ounces of lemonade, assuming it has lemonade.