Answer:
4.737 litres
Explanation:
Total volume of punch beth is making = 7,763milliliters
If the punch contains the mixture of orange juice and pineapple juice then;
Volume of punch = Volume of pineapple juice + volume of orange juice
If she uses 3 litres 26 millilitres of orange juice.
converting the volume of orange juice to millilitres (1 litre = 1000 millilitres)
Volume of orange juice = 3000 millilitres + 26 millilitres = 3,026 millilitres
Volume of pineapple juice needed = Total volume of punch - Volume of orange juice
Volume of pineapple juice needed = 7,763 - 3,026
Volume of pineapple juice needed = 4,737millilitres
Converting the volume of pineapple to litres = 4,737/1000 = 4.737litres
The amount of liters of pineapple juice mary beth need to add to complete her punch is 4.737 litres