From a cask of milk containing 64 litres, 8 litres are drawn out and the cask is filled up with water. If the same process is repeated a second, then a third time, what will be the proportion of milk to water in the resulting mixture?
1
343 ∶ 179
2
333 ∶ 169
3
443 ∶ 179
4
343 ∶ 169