Help me please i would be sooo thankful!

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?

17 in long 1.3 ft wide and 8in high what is the volume

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?