SOLUTION: a solution of salt and water contains 12% salt by weight .after evaporation of 25 kg of water from the solution, the concentration of salt is 22%. what is the original quantity of
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Question 715306: a solution of salt and water contains 12% salt by weight .after evaporation of 25 kg of water from the solution, the concentration of salt is 22%. what is the original quantity of salt in the solution?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a solution of salt and water contains 12% salt by weight .after evaporation of 25 kg of water from the solution, the concentration of salt is 22%. what is the original quantity of salt in the solution?
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Equation:
salt + salt = salt
0.12x - 0*25 = 0.22*(x-25)
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12x - 0 = 22x - 22*25
-10x = -22*25
x = 55 kg (original quantity)
0.12x = 6.6 kg (original amount of salt)
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Cheers,
Stan H.
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