Answer: she used 72 ounces of blueberries.
Step-by-step explanation:
She used a total of 168 ounces of bananas and blueberries. This means that
x + y = 168
The recipe called for 3 ounces of bananas and 2 1/4 ounces of blueberries for each drink. This means that the ratio of ounces of bananas to blueberries used for each drink is 3 : 2.25
Total ratio = 3 + 2.25 = 5.25
Therefore, the number of ounces of blueberries did Kama use for the fruit drinks she made is
2.25/5.25 × 168 = 72 ounces.
