Question 1156880
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Let x = pounds of birdseed;  then the pounds of sunflowers is (50-x).


The money equation is

    0.62x + 0.92*(50-x) = 0.85*50.


From the equation, express x and calculate

    x = {{{(0.85*50 - 0.92*50)/(0.62-0.92)}}} = 11.667 pounds of birdseed.


<U>ANSWER</U>.  11.667 pounds of birdseed and the rest, (50-11.667) = 38.333 pounds of sunflower.
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Solved.