Question 1048917
.
How many pounds of coffee beans that costs $2 per pound should be added to 10 pounds of coffee beans that costs $10 per pound 
to have a new blend of coffee that costs $4 per pound? 
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<pre>
Yours governing equation is 


2*x + 10*10 = (x+10)*4.


Solve for x, where x = "how many pounds of coffee beans should be added".


The left side is the cost of the blend.
The right side is the same, expressed by another way.
</pre>

For detailed solutions of many similar problems see the lessons

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