SOLUTION: A coffee shop sells two brands of coffee. The first brand costs 2.5 dollars per pound, the second costs 3.5 dollars per pound. The manager wants to mix 9 pounds of the coffee th

Question 898005: A coffee shop sells two brands of coffee. The first brand costs 2.5 dollars per pound, the second costs 3.5 dollars per pound. The manager wants to mix 9 pounds of the coffee that sells for 3.5 dollars to get a mixture that will sell for 2.9 dollars per pound. How many pounds of the 2.5 dollar coffee should be used?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Read, study, and then follow this:

http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev

The price is like a concentration in the unit of DOLLARS per POUND.
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