From a container containing 50 litres of milk, 8 litres of milk was taken out and replaced by water. This process is repeated two more times. How much milk is now left in the container ?

29.6352

The correct answer is option (1) : 29.6352 litre

Given $x= 50\, litre $

$y = 8\, litre $

$n= 3$

So, amount of milk left $= x \left(1-\frac{y}{Zx}\right)^n$

$=50\left(1-\frac{8}{50}\right)^3$

$= 50 ×\left(\frac{21}{25}\right)^3$

$= 29.6352 \, litre $