From a container having pure milk, 40% is replaced by water and the process is repeated thrice. At the end of the third operation, the purity of milk is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 21.6%
Total : Remaining
100 : 60 (100 - 40)
100 : 60
100 : 60
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125 : 27
Purity of Milk = [27/125] × 100 = 21.6%