SOLUTION: How much of an 8% saline solution should be added to 600ml of a 3% solution to produce a 5% solution?

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Question 457277: How much of an 8% saline solution should be added to 600ml of a 3% solution to produce a 5% solution?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How much of an 8% saline solution should be added to 600ml of a 3% solution to produce a 5% solution?
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0.08x + 0.03*600 = 0.05(x+600)
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Multiply thru by 100 to get:
8x + 3*600 = 5x + 5*600
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3x = 2*600
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x = 400ml (amt of 8% solution needed)
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Cheers,
Stan H.