A vessel contains 120 liters mixture of milk and water in the ratio of 2 : 1. 30 liters mixture is taken out from the vessel and 10 liters pure milk added in the remaining mixture. Find the ratio of milk to water in resultant mixture?

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Total mixture = 120 liters

Ratio of milk : water = 2 : 1

30 liters of the mixture is taken out

Then 10 liters pure milk is added to the remaining mixture

Find final ratio of milk : water