How do you solve this: Ellen wishes to mix candy worth $1.64 per pound with candy worth $3.36 per pounds to form 30 pounds of a mixture worth $2.33 per pound. How many pounds of the more expensive candy should she use? help please! :)

Question

anonymous · Answer

start by determining the total cost of the 30 pounds of candy, what do you get?

day_2010 · Answer

1.25

anonymous · Answer

Let cheap candy quantity be C. Let expensive candy quanity be E.

C + E = 30
(1.64C + 3.36E)/30 = 2.33

Solve for C and E.

anonymous · Answer

C + E = 30
1.64C + 3.36E = 69.9
1.64(30-E) + 3.36E = 69.9
49.2 - 1.64E + 3.36E = 69.9
3.36E - 1.64E = 69.9 - 49.2
1.72E = 20.7
E = 20.7/1.72 = ?

anonymous · Answer

12 Pounds.

day_2010 · Answer

Oh okay... thanks for simplifying this for me... I hate word problems and this one gave me trouble. Thank You So Much!

anonymous · Answer

no, that is the one i tried and it didn't work.  sorry, i will delete

anonymous · Answer

No. That won't do it.

anonymous · Answer

LOL -- the next line in my notes show the same you provided.