Let's denote the total number of apples Sara picked as \( x \).
Sara discarded \( \frac{1}{4} \) of the apples (assuming "I" means "1/4"). Therefore, the number of apples she discarded is:
\[ \frac{1}{4}x \]
The number of apples remaining after the discards is:
\[ x - \frac{1}{4}x = \frac{3}{4}x \]
From the remaining apples, 300 were made into cider. The rest of the remaining apples were sold as fresh fruit, which can be calculated as follows:
\[ \text{Apples sold as fresh fruit} = \left(\frac{3}{4}x - 300\right) \]
Now, we need to find the fraction of the total apples picked that were sold as fresh fruit:
\[ \text{Fraction of total apples sold as fresh fruit} = \frac{\frac{3}{4}x - 300}{x} \]
To simplify this fraction, we can separate the terms in the numerator:
\[ \frac{\frac{3}{4}x - 300}{x} = \frac{\frac{3}{4}x}{x} - \frac{300}{x} = \frac{3}{4} - \frac{300}{x} \]
Now, solving for \( x \) (the total number of apples picked) given that \( \frac{3}{4}x - 300 = 0 \) (i.e., when the remaining apples equals the cider made), we can rearrange:
\[ \frac{3}{4}x = 300 \]
Multiplying both sides by \( \frac{4}{3} \):
\[ x = 300 \times \frac{4}{3} = 400 \]
Now substitute \( x = 400 \) back into the equation for fresh fruit:
The total number of apples picked is 400, and the number sold as fresh fruit is calculated as follows:
\[ \text{Remaining apples} = \frac{3}{4} \times 400 = 300 \] \[ \text{Fresh fruit} = 300 - 300 = 0 \text{ (therefore this approach isn't correct here)} \]
However, we need the total number sold as fresh fruit:
\[ \frac{3}{4}x - 300 = \frac{3}{4} \cdot 400 - 300 = 300 - 300 = 0 \]
We can conclude instead the calculation for apples sold should mean \( 300 - 300\) was \( x \).
Therefore our overall fraction based only on final cider is \( 0 \).
Rather the final fraction \( \text{Selling Fresh Fruit} \):
Thus:
\[ \frac{\text{sold}}{total} = \frac{300}{400} = \frac{3}{4}
So the correct is
[ \boxed{0} \]