If the year is 3/5 over, then the farmer has planted 3/5 of the total amount of acreage.
Let x be the total amount of acreage the farmer plants in a year.
We know that:
x = (3 1/3) acres
We also know that:
(3/5) * x = amount of acreage planted so far
Substituting x:
(3/5) * (3 1/3) = (3/5) * (10/3) = 6/5 acres
Therefore, the farmer has planted 6/5 acres so far.