SOLUTION: How much coffee costing $6.00 per pound should be mixed with 3 pounds of coffee costing $4.00 per pound to create a mixture costing $4.50 per pound?

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Question 750618: How much coffee costing $6.00 per pound should be mixed with 3 pounds of coffee costing $4.00 per pound to create a mixture costing $4.50 per pound?
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
We'll call the unknown quantity x
6x-total cost of 6 dollar coffee
(3)(4) -total cost of 4 dollar coffee

so our working equation is

6x+12=(x+3)(4.5)

which when solved gives us x=1 pound

:)