Question 1155968
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Total cost of ingredients is  12*8 + 30*4.50 = 231 dollars.


Price per pound of the mixture is  {{{231/(12+30)}}} = 5.50 dollars.


<U>ANSWER</U>.  $5.50 per pound.
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Those who just solved such problems more than 3 - 5 times (like me :), write the solution in one line

   
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Price of the mixture per pound = {{{(12*8 + 30*4.50)/(12+30)}}} = 5.50 dollars.