8 pounds of blueberries are needed to make 20 blueberry pies.
Step-by-step explanation:
Given,
To make 5 blueberry pies, 2 pounds of blueberries are used.
Ratio of pounds to pie = 2:5
Let,
x be the pounds of blueberries to make 20 pies.
Ratio of pounds to pie = x:20
Using proportion;
Ratio of pounds to pies :: Ratio of pounds to pies

Product of mean = Product of extreme

Dividing both sides by 5

8 pounds of blueberries are needed to make 20 blueberry pies.
Keywords: ratio, proportion
Learn more about proportion at:
#LearnwithBrainly