Question 344866
how many grams of 4% salt solution must 
be mixed with 50g of a 9% salt solution 
to make a 6% salt solution?
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Equation:
salt + salt = salt
0.04x + 0.09*50 = 0.06(x+50)
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Multiply thru 100 to get:
4x + 9*50 = 6x + 6*50
2x = 3*50
x = 75 grams (amt. of 4% solution needed for the mixture)
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Cheers,
Stan H.
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