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
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
Updated On: Sep 30, 2024
- 35.2
- 30.3
- 20.5
- 25.4
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The Correct Option is A
Solution and Explanation
The correct answer is (A):
Final quantity of alcohol in the mixture = 700/700+175×(90/100)2×[700+175] = 567ml
Therefore, final quantity of water in the mixture = 875 - 567 = 308 ml
Hence, the percentage of water in the mixture = 308/875×100 = 35.2%
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