<PRE><B>Question 148225</B>
 A 5% acid solution is mixed with a 9% acid solution. How many ounces of the 5% acid solution must you mix with the 10 ounces of 9% acid solution to obtain 40ounces of 6%acid solution?
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Acid EQUATION:  0.05x + 0.09*10 = 0.06*40
0.05x + 0.9 = 2.4
0.05x = 1.5
5x = 150
x = 30 oz(amount of 5% that must be added)
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Cheers,
Stan H.

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