SOLUTION: I know the answer to the problem, 8 boxes of ball points and 4 boxes of felt tips, but I am unsure of how to write the equation so that it makes sense. Here is the word Problem:

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Question 214275: I know the answer to the problem, 8 boxes of ball points and 4 boxes of felt tips, but I am unsure of how to write the equation so that it makes sense.
Here is the word Problem:
Will ordered 2 times as many boxes of ballpoint pens as boxes of felt tip pens. Ballpoint pens cost $3.50 per box, and felt tip pens cost $4.50 per box. If Will's order of pens totaled $46.00, how many boxes of each type of pen did he buy.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
b=2f
3.50b+4.50f=46.00
3.50*2f+4.50f=46.00
7.00f+4.50f=46.00
11.50f=46.00
f=46.00/11.50
f=4 boxes of felt tip pens were bought.
b=2*4=8 boxes of ball point pens were bought.
Proof:
3.50*8+4.50*4=46.00
28+18=46.00
46=46