Answer
160 bu/acre
Work Step by Step
given a $\frac{1}{20}$ acre plot produces 448 lb shelled corn
Therefore we need to find the yield in bushels per acre
first convert the weight into bu = 448 lb $\div$ 56
= 8 bu
Now the yield = 8 bu $\div$ $\frac{1}{20}$
8 bu x 20 = 160 bu/acre
