To find the fraction of fruit that are apples, we need to determine the number of apples and the total number of fruit.
According to the information provided:
- Number of apples = 8
- Number of oranges = 7
- Total number of fruit = 8 apples + 7 oranges = 15 fruit
The fraction of fruit that are apples can be expressed as:
\[ \frac{\text{Number of apples}}{\text{Total number of fruit}} = \frac{8}{15} \]
In this fraction, the numerator is the number of apples.
Thus, the numerator of the fraction that Jasmine would write is 8.