1 litre of water is added to 5 litres of alcohol-water solution containing 40% alcohol strength. The strength of alcohol in the new solution is
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Volume of solute = 50ml
Volume of solvent = 150ml
Volume of solution = Solvent + Solute
= 50 + 150 = 200
concentration = (Volume of solute/Volume of solution)100
= (50/200)100
= 25%
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