SOLUTION: 500gm of salt solution has 30% salt in it.how much salt should be added to make the salt 50% in the solution?

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Question 828990: 500gm of salt solution has 30% salt in it.how much salt should be added to make the salt 50% in the solution?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
500gm of salt solution has 30% salt in it.how much salt should be added to make the salt 50% in the solution?
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Equation:
salt + salt = salt
0.30*500 + 1*x = 0.50(500+x)
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30*500 + 100x = 50*500 + 50x
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50x = 20*500
x = 200 grams (amt. of pure salt to add)
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Cheers,
Stan H.
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