There are three cups of mixture of milk and water in ratio 4 ∶ 5, 5 ∶ 6, 9 ∶ 7. 36 liters of first and 44 liters of second cup are taken. How much quantity from third cup is to be taken so that final mixture from the three cups will have milk and water in ratio 1 ∶ 1?
1
32 litres
2
64 litres
3
54 litres
4
60 litres