DATE:02-12-2017
Q)A jar full of whisky contains 72% alcohol. A part of this whisky is replaced by another containing 48% alcohol and now the percentage of alcohol was found to be 64%. The fraction of the quantity of whisky replaced is
Q)A jar full of whisky contains 72% alcohol. A part of this whisky is replaced by another containing 48% alcohol and now the percentage of alcohol was found to be 64%. The fraction of the quantity of whisky replaced is
Ans: 1/3 (Option-2)
Solution:
Let us assume it has 10ml of whiskey and 7.2ml of alcohol
Later the concentration of whiskey becomes 6.4ml
It means the alcohol in 6.4 ml is 7.2-0.72x+0.48x
=>6.4=7.2-0.72x+0.48x
Let us assume it has 10ml of whiskey and 7.2ml of alcohol
Later the concentration of whiskey becomes 6.4ml
It means the alcohol in 6.4 ml is 7.2-0.72x+0.48x
=>6.4=7.2-0.72x+0.48x
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