Question 1156894
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Let H be the amount of his soil of 23% sand.


The equation for the mixture

    0.23H + 0.39*6 = 0.35*(H + 6).


From the equation, express H and calculate

    H = {{{(0.35*6 - 0.39*6)/(0.23 - 0.35)}}} = 2.


<U>ANSWER</U>. He should use 2 pounds of his soil.  (Option B)
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