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 ?
Answer & explanation
Correct answer: option 1
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 $