<PRE><B>Question 995909</B>
 How many gallons of a 25 percent saline solution and a 35 percent solution must be mixed together to get 220 Gallons of 30 percent saline solution.
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Equation:
salt + salt = salt
0.25x + 0.35(220-x) = 0.30*220
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25x + 35*220 - 35x = 30*220
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-10x = -5*220
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x = (1/2)220
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x = 110 Gallons (amt. of 25% solution needed)
220-x = 110 Gallons (amt. of 35% solution needed)
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Cheers,
Stan H.
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