From a cask containing \(y\) liters of milk, \(x\) liters of milk is drawn out and \(z\) liters of water are then added

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From a cask containing \(y\) liters of milk, \(x\) liters of milk is drawn out and \(z\) liters of water are then added to the cask. This process is repeated one more time. What is the fraction of milk finally present in the mixture in the cask?

1) \(x = 20, y = 100\)
2) \(x\) and \(z\) form \(20\%\) and \(10\%\) of \(y,\) respectively

The OA is B
Source: — Data Sufficiency |