Final answer:
The total number of non-vanilla cakes is determined by calculating the total cakes based on the percentage of vanilla cakes, which is 400. Option D is correct.
Step-by-step explanation:
The question is about determining the number of cakes that were not vanilla based on the given percentage and the amount produced by a team for a bake sale. We know that the vanilla cakes represent 20 percent of the total sales, and that the 4 person team collectively made 100 vanilla cakes in total (4 members × 25 cakes each). To find out the total number of cakes sold, we will let the total number of cakes be represented by T, where the vanilla cakes (100) are 20% of T.
Calculating the total number of cakes:
100 = 0.20 × T
T = 100 / 0.20
T = 500
Calculating the number of non-vanilla cakes:
Total number of non-vanilla cakes = T - number of vanilla cakes
Non-vanilla cakes = 500 - 100
Non-vanilla cakes = 400
Therefore, the number of cakes that were not vanilla is 400, which means that option d) 100 is incorrect.