Answer:
The Number of bikinis with Brenna is 12.
Explanation:
Given :
Total swimsuits = 30
Breanna's swimwear consists of = 40% of bikinis
To find :
Total number of bikini styles with Brenna
Solution :
Find the 40% of the total swimsuit styles to get the number of bikinis

Number of bikinis = 12
The Number of bikinis with Brenna is 12.