SOLUTION: Janet sells 'designer chocolates.' Bonbons cost $2 a pound, while truffles cost $5 a pound. Janet has five pounds of bonbons, to which she wants to add just enough truffles to resu

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Question 199914: Janet sells 'designer chocolates.' Bonbons cost $2 a pound, while truffles cost $5 a pound. Janet has five pounds of bonbons, to which she wants to add just enough truffles to result in a $3-a-pound chocolate mixture. How many pounds of truffles should she use?
I am having problems coming up with what formula to use and how i am supposed to properly solve this?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let t = "pounds of truffles"

2(5) + 5(t) = 3(5 + t)

10 + 5t = 15 + 3t

2t = 5

t = 5/2 ___ or 2.5 lb