document.write( "Question 768579: if a 25ml of a solution of 50% is used then how much amount of 30% of same solution must be used?\r
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Algebra.Com's Answer #468373 by ramkikk66(644) $\"\"$ $\"About$

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document.write( "25 ml of solution is at 50%. That means that it contains 50% of the solute e.g.
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document.write( "let us assume it is alcohol.
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document.write( "I.e. in a 50% solution of 25 ml, volume of alcohol = 25*50% =  25 * 0.5 = 12.5 ml
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document.write( "Now the question, if you had the same volume of alcohol, i.e. 12.5 ml, what is 
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document.write( "the total volume of the mixture to make it a 30% solution.
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document.write( "If the 30% solution mixture has a volume of x ml, and 12.5 ml of it is alcohol,
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document.write( "then it means that:
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document.write( "x * 30% = x * 0.3 = 12.5
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document.write( "x = 12.5/0.3 = 41.67 ml approximately.
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document.write( "So to get the same amount of alcohol, you have to use 41.67 ml of a 30% solution.
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document.write( "Hope you got it :)
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