Respuesta :
The number of students who preferred chocolate chip cookies is 12.
Given that,
- A total of 8 students preferred oatmeal cookies.
- And, it represents 40% of her class.
Based on the above information, the calculation is as follows:
[tex]= \frac{8}{0.40} - 8\\\\= 20 - 8[/tex]
= 12
Therefore we can conclude that the number of students who preferred chocolate chip cookies is 12.
Learn more: brainly.com/question/2547741