SOLUTION: The coffee merchant plans to mix some fancy $6.50 per pound ground coffee called royal soil with 10 pounds of a lowly $2 per pound ground called royal peasant. How many pounds of t

Question 1190434: The coffee merchant plans to mix some fancy $6.50 per pound ground coffee called royal soil with 10 pounds of a lowly $2 per pound ground called royal peasant. How many pounds of the $6.50 per pound ground coffee should he use
I need to solve this using only X's, not x and Y
6.50x + 2•10 = ???????
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
The coffee merchant plans to mix some fancy $6.50 per pound ground coffee called royal soil
with 10 pounds of a lowly $2 per pound ground called royal peasant.
How many pounds of the $6.50 per pound ground coffee should he use
I need to solve this using only X's, not x and Y
6.50x + 2•10 = ???????
~~~~~~~~~~~~~~~~~

The problem's formulation is INCOMPLETE,
since the target average (effective) price is not given.

In this incomplete formulation, the problem CAN NOT be solved.

It is why you have difficulties in making your governing equation.

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To see many similar solved problems on mixtures, look into the lessons
    - Word problems on mixtures for dry substances like coffee beans, nuts, cashew and peanuts
    - Word problems on mixtures for dry substances like candies, dried fruits
in this site.

Learn the subject from there, once and for all.

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