A container contains 81 liters of milk and water in the ratio 5: 4. 36 liters of mixture is taken out and replaced with (x - 5) liters of water and x liters of milk.Then the ratio of milk to water becomes 7: 5. Find the total quantity of final mixture.
1
70 litres
2
65 litres
3
60 litres
4
50 litres
5
55 litres