Algebra help

[Saint]

I hate 9th grade <_<. Okay so help me out.

Problem:

An advertisement for grape drink claims that the drink contains 10% grape juice. How much pure grape juice would have to be added to 5 quarts of the drink to obtain a mixture containing 40% grape juice?

[AlexanderVB]

I would answer this, but I am in history class right now, and I am thining soley of that. But at 3PM WST I'll give it a shot.

[Saint]

I think I might have it. My algebra teacher is a dumbass who won't answer any questions or explain anytihng to us. I have to figure it all out on my own. I love how she just said to me "When you get back from your suspension we're having a test on chapter 3!" So I've gotta learn the entire 2nd half of the chapter on my own for the test.

Edit:

Jakuza I'm taking AP Algebra

[ChicaQueenOfWarGames]

I'm having a brain fart at the moment because I'm still thinking about the funny thing that happen in math today. But I think you put it in a equation. Change the percents to decimal. But I dunno how to set it up.

[Jakuza]

Whoa, now this is somethin. I never got anything like this yet and im in honor's math. We are currently workin on cumalative frequencies and graphs.