Answer:
The fraction of brownies with both white frosting and small red hearts is not given. And also the total number of brownies made is not given too.
Therefore, the number of brownies that have both white frosting and small red hearts on them cannot be determined
Step-by-step explanation:
Given;
1. You put 1 white frosting per 3 of the brownies
2. You put 1 small red hearts per 4 of the brownies
Fraction of brownies with;
White frosting = 1/3
Small red hearts = 1/4
The fraction of brownies with both white frosting and small red hearts is not given. And also the total number of brownies made is not given too.
Therefore, the number of brownies that have both white frosting and small red hearts on them cannot be determined
For example:
Assuming that;
The fraction of brownies with both white frosting and small red hearts = 1/12
The total number of brownies baked = 36
The number of brownies with both white frosting and small red hearts = 1/12 × 36 = 3 brownies.
