Question

In a vessel, there are 100 litres of water. 10 litres
of water are withdrawn and replaced with milk,
then 10 litres of mixture are drawn & replaced with
milk. This operation is done once more. What is
the quantity of water left in the mixture (in Itrs)?​

Answer 1

Step-by-step explanation:

Formula = Toatl Mixture*(1- replaced/total mixture)^times.

no. of times drawn = 3 ( read the question carefully)

100*(9/10)^3

= 100(729/1000)

=72.9

So, 72.9liters of WATER PRESENT in the mixture.

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