Answer:
5/9
Explanation:
First, find the total number of mL in the drink:
20 + 10 + 15
= 45
There are 10 mL of apple juice, so the proportion will be 10/45
Simplify this by dividing the numerator and denominator by 5:
10/45
= 5/9
So, 5/9 is the proportion of the cocktail that is apple juice