Sara picked a total of 200 apples. She discarded \( \frac{1}{10} \) of them as defective.
To find out how many apples she discarded as defective:
\[ \text{Defective apples} = \frac{1}{10} \times 200 = 20 \]
Now, to find out how many apples were sold as fresh fruit, we subtract the defective apples from the total apples picked:
\[ \text{Fresh apples} = 200 - 20 = 180 \]
Therefore, the number of apples sold as fresh fruit is 180 apples.