Can someone help me with this histogram please

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?

Two lines parallel to the same plane are parallel to eachother

Find the solution of this system of equation -7x+y=-20 9x-3y=36