In a 729 litres mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7:3, the amount of water to be added is:

In a 729 litres mixture of milk and water, the ratio of milk to water

1.	In a 729 litres mixture of milk and water, the ratio of milk to water is 7:2. to get a new mixture containing milk and water in the ratio 7:3, the amount of water to be added is:
A.	81 litres
B.	71 litres
C.	56 litres
D.	50 litres
Answer» B. 71 litres