Final answer:
The provided information does not give us the specific numbers needed to calculate the fraction of part-time members of staff who are women.
Step-by-step explanation:
The question is asking for the fraction of part-time members of staff that are women. In order to determine this, we need to know the total number of part-time members of staff and the number of women among them. The information provided in the context does not give us the specific numbers we need to calculate the fraction. We would need more data to answer this question accurately.