SOLUTION: A mixture of 50 litres of milk and water contain 10% of water. How much water must be added to make water 20% in the given mixture?

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Question 478158: A mixture of 50 litres of milk and water contain 10% of water. How much water must be added to make water 20% in the given mixture?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
(50)(10%) + (w)(100%) = (50 + w)(20%)