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?
Suppose a container contains x units of a liquid from which y units are taken out and replaced by water. After n operations, quantity of pure liquid
=x(1−yx)n units.
milk contained by the container now
=40(1−440)3
=40(1−110)3
=40×910×910×910
=4×9×9×9100
=29.16