A total of 40 people made cakes for a bake sale. Each person made 3 cakes. Mrs. Sánchez found that 15% of these cakes were chocolate. How many chocolate cakes were made for the bake sale?
120
6
18
Not here
The total number of cakes made by the 40 people is 40 * 3 = 120 cakes.
15% of 120 is 0.15 * 120 = 18 chocolate cakes were made for the bake sale.
Therefore, the correct answer is 18.