What Value of |n| = 3.5 is true

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Ihonestly have no clue if it's each or none.

Use the squared identities to simplify sin^2x cos^2x