A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?

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Question: A container contains 40 litres of milk. From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?
[A].

26.34 litres

[B].

27.36 litres

[C].

28 litres

[D].

29.16 litres

Answer: Option D

Explanation:

Amount of milk left after 3 operations = 40 1 – 4 3  litres
40
   = 40 x 9 x 9 x 9 = 29.16 litres.
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