John Gill Commentary Numbers 28:20

"and their meal-offering, fine flour mingled with oil: three tenth parts shall ye offer for a bullock, and two tenth parts for the ram;" — Numbers 28:20 (ASV)

Ver. 20,21. And their meat offering
The quantity of flour for which is the same for a bullock, a ram, and a lamb, as in (Numbers 28:12Numbers 28:13) .