Sarah discarded 1/10 of the apples she picked as defected of the apples remaining 300 were made into cider. The rest were sold as fresh fruit. What fraction of the total apples picked were sold as fresh fruit.

If 1/10 of the apples were discarded as defective, then 9/10 of the apples remained.

Out of these 9/10 of the apples, 300 were made into cider, leaving 9/10 - 300/10 = 6/10 of the apples sold as fresh fruit.
Thus, the fraction of the total apples picked that were sold as fresh fruit is 6/10 = <<6/10=3/5>>3/5. Answer: \boxed{\frac{3}{5}}.

To find the fraction of the total apples picked that were sold as fresh fruit, we need to calculate the proportion of apples that were not discarded or made into cider.

Let's break down the information given:

1) Sarah discarded 1/10 of the apples she picked as defective.
2) The remaining 300 apples were made into cider.

To find the fraction of apples sold as fresh fruit, we need to calculate the fraction of apples that were not discarded or made into cider.

If Sarah discarded 1/10 of the apples, then 9/10 of the apples remained.
Out of these remaining 9/10 of the apples, 300 were made into cider.
Therefore, the fraction of apples that were sold as fresh fruit is given by:

(9/10) - (300/total) = (total remaining - cider made) / total remaining

Since we don't know the total number of apples picked, we can express the fraction as a ratio:
(total remaining - cider made) / total remaining

However, we need additional information to determine the exact fraction of apples sold as fresh fruit.

To find the fraction of the total apples picked that were sold as fresh fruit, we need to first determine the number of remaining apples after Sarah discarded 1/10 of them as defected.

Let's assume Sarah picked x apples in total.

Since Sarah discarded 1/10 of the apples, the number of apples remaining is given by:
Remaining apples = x - (1/10)x
= x - x/10
= (10x - x)/10
= 9x/10

Now, out of the remaining apples (9x/10), 300 apples were made into cider. Therefore, the number of apples sold as fresh fruit is given by:
Apples sold as fresh fruit = (9x/10) - 300

To find the fraction of the total apples picked that were sold as fresh fruit, we need to divide the number of apples sold as fresh fruit by the total number of apples picked. So,

Fraction of apples sold as fresh fruit = (Apples sold as fresh fruit) / (Total apples picked)
= [(9x/10) - 300] / x

Simplifying the expression, we get:
Fraction of apples sold as fresh fruit = (9x - 3000) / 10x

Therefore, the fraction of the total apples picked that were sold as fresh fruit is (9x - 3000) / 10x.