A jar contains a mixture of 175 ml water and 700 ml alcohol. Gopal takes out 10% of the mixture and substitute

Question

A jar contains a mixture of 175 ml water and 700 ml alcohol. Gopal takes out 10% of the mixture and substitutes it by water of the same amount. The process is repeated once again. The percentage of water in the mixture is now

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Accepted Answer

35.2. Final quantity of alcohol in the mixture = 700 700 + 175 ∗ ( 90 100 ) 2 ∗ [ 700 + 175 ] \dfrac{700}{700+175}*(\dfrac{90}{100})^2*[700+175] 700 + 175 700 ​ ∗ ( 100 90 ​ ) 2 ∗ [ 700 + 175 ] = 567 ml Therefore, final quantity of water in the mixture = 875 - 567 = 308 ml Hence, we can say that the perce