Answer
Average output per acre: 40 bushels/acre
Average output per worker: 4000 bushels/worker
Work Step by Step
The average output per acre is equal to the amount produced divided by the number of acres.
So, we have $\frac{40,000}{1,000}$ = 40 bushels/acre
The average output per worker is equal to the amount produced divided by the number of workers.
So, we have $\frac{40,000}{10}$ = 4000 bushels/worker