<PRE><B>Question 384856</B>
How much water should be added to a 150ml of a 25% salt solution to make a 15% salt solution?
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Equation:
water + water = water
0.75*150 + x = 0.85(150+x)
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Multiply thru by 100 to get:
75*150 + 100x = 85*150 + 85x
15x = 10*150
x = 10*10 = 100 ml (amt. of water that must be added to the mixture)
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Cheers,
Stan H.
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