To find the percentage of land that can be farmed, you can use the formula:
\[ \text{Percentage} = \left( \frac{\text{Farming Land}}{\text{Total Land}} \right) \times 100 \]
In this case:
- Farming Land = 20 acres
- Total Land = 30 acres
Now plugging in the values:
\[ \text{Percentage} = \left( \frac{20}{30} \right) \times 100 = \frac{2}{3} \times 100 \approx 66.67% \]
So the percentage of the land available for farming is approximately \(66.67%\).
Therefore, the correct choice from the options provided is:
66.66¯¯¯¯¯ % (since the repeating bar indicates that the decimal continues).