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The International Union of Pure and Applied Chemistry (IUPAC): It is the world authority on chemical nomenclature and terminology, including the naming of new elements in the periodic table; on standardized methods for measurement; and on atomic weights, and many other critically evaluated data. Dr Lynn M. Soby is the Executive Director of IUPAC.
In a mixture of 45 litres, the ratio of wine to water is 2 : 3. If this ratio is to be 1 : 3, then what is the quantity of water needed to be added?
