SOLUTION: Ronald has 12% solution of the fertilizer super grow. how much pure super grow should he ass to the mixture to get 32 oz of a 17.5% concentration?

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Question 1092704: Ronald has 12% solution of the fertilizer super grow. how much pure super grow should he ass to the mixture to get 32 oz of a 17.5% concentration?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = ounces of pure supergrow to be added
+%28+.12%2A%28+32+-+x+%29+%2B+x+%29+%2F+32+=+.175+
+.12%2A%28+32+-+x+%29+%2B+x+=+5.6+
+3.84+-+.12x+%2B+x+=+5.6+
+.88x+=+1.76+
+x+=+2+
He should add 2 ounces of pure supergrow
to the 12% solution
--------------------
check:
+%28+.12%2A%28+32+-+x+%29+%2B+x+%29+%2F+32+=+.175+
+%28+.12%2A%28+32+-+2+%29+%2B+2+%29+%2F+32+=+.175+
+%28+.12%2A30+%2B+2+%29+%2F+32+=+.175+
+%28+3.6+%2B+2+%29+%2F+32+=+.175+
+5.6+=+5.6+
OK