Answer:
$127.23
Step-by-step explanation:
Assuming that we only have 4 weeks in each month since we were not given the name of the months:
If there are $15 each month there will be $90.00 saved from her own pocket by the end of 6 month. If the interest is a compound interest then an additional 5% will be added to the sum of her savings each month.
This will grow a 5% increase on her total savings and will amount to $127.23 at the end of the 6 months.