Mixture of Water and Spirit

Algebra Level pending

A container originally contains 10 litres of pure spirit. From this container 1 litre of spirit is replaced with 1 litre of water. Subsequently, 1 litre of the mixture is again replaced with 1 litre of water and this process is repeated one more time. How much spirit is now left in the container?

7.29 litres 7.58 litres 7.84 litres 7.48 litres

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