Answer:
12 kilograms
Step-by-step explanation:
Let's construct an equation for her profits, we will call it P(x), where x is the number of kilograms produced/sold.
We know she has -$108 profit from buying supplies, and for each kilogram she produces, she earns -$16 (or loses $16, if earning negative money bothers you). However, we also know that she earns $25 per kilogram sold.
Constructing the equation with this information, we get:
Setting this equation to zero and solving for x: