SOLUTION: a merchant has coffee worth $20 a pound that she wishes to mix with 60 pounds of $90 a pound to get a mixture that can be sold for $60 a pound. How many pounds of the $20 coffee s

Question 888672: a merchant has coffee worth $20 a pound that she wishes to mix with 60 pounds of $90 a pound to get a mixture that can be sold for $60 a pound. How many pounds of the $20 coffee should be used?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
=

Let x = how many pounds of the $20/pound coffee.

Some simplification,

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