How to do Hajaija

Question

You are making 8 quarts of fruit punch for a party. You want the punch to contain 50% fruit juice. You have bottles of 100% fruit juice and 20% fruit juice. How many quarts of each kind of fruit juice should you use to make the 8 quarts of 50% fruit juice?

Answer 1

x quarts of 20% 

8 - x quarts of 100%

 

0.2x + 8 - x = 0.5(8)

 

Can you solve for x and answer?