What is the answer to 3/5 plus 4/15

Find the simple interest earned to the nearest cent for each principal, interest rate, and time 735 7% and two and a half years

Two lines parallel to a third line are parallel to each other. always sometimes or never

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?