Answer:
0.18 litres
Explanation:
To find out how much blackcurrant juice Ellie should add, we first need to determine how much space is left in the litre after she adds the apple and orange juice.
We can start by adding the apple and orange juice:
0.32 L + 0.5 L = 0.82 L
This means that there is 1 L - 0.82 L = 0.18 L of space left in the litre for the blackcurrant juice.
Therefore, Ellie should add 0.18 litres of blackcurrant juice to make 1 litre of her fruit cocktail.