18. In a vessel, there is 81 litres of pure milk.1/3rd of themilk is r – InterviewSolution

1.	18. In a vessel, there is 81 litres of pure milk.1/3rd of themilk is removed and same quantity of water is added.Again 1/3rd of the mixture is replaced by same amountof water. Find the ratio of milk and water in the newmixture.
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