SOLUTION: How much water must be added to 300l of a solution so that it's concentration may change from 25% to 20%

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Question 927419: How much water must be added to 300l of a solution so that it's concentration may change from 25% to 20%
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How much water must be added to 300l of a solution so that it's concentration may change from 25% to 20%
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Equation::
water + water = water
0.75*3001 + 1*x = 0.80(3001+x)
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75*3001 + 100x = 80*3001 + 80x
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20x = 5*3001
x = 750.25 units of water must be added
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Cheers,
Stan H.
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