Answer:
7:16
Step-by-step explanation:
First, you would figure out the total number of balls by adding the three aforementioned numbers together. 5 + 7 + 4 = 12 + 4 = 16.
Then, you look at the number of blue balls in the data set. There are 7.
Thus, the ratio would be 7:16. That cannot be reduced neatly, so that's why I'm leaving it as 7:16.
