Answer:

Explanation:
The problem says that Angela uses 2/3 cup strawberries to make 5/6 liter of smoothies. Then, to find the unit rate in cups of strawberrry per liter, that is cup/liter we need to divide both fractions:

Then, the unit rate in cups of strawberry per liter is
That is, Angela uses 4/5 cups of strawberry to do 1 liter of smoothie.