In a fruit cocktail, for every 25 ml of orange juice you need 30 ml of apple juice and 45 ml of coconut milk. What proportion of the cocktail is apple juice? Give your answer as a fraction in its simplest form.

i believe that the apple juice is 30% of the proportion because:
when you add everything up: 25+30+45=100
now you must divide the whole cocktail just by the apple juice:
100 : 30 = 3.33333333
Meaning the apple juice takes 30% of the proportion.
Hope i helped