Question

a container has certain quantity of water only. 3 litres of water is drawn out and replaced with 3 litres of milk. this operation is carried out one more time. finally, the ratio of milk to water in the container becomes 9:16. what is the volume of water initially?

Answer 1

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Answer 2

Answer: 15 litres

Step-by-step explanation:

Let Total mixture= M units

3l water replaced with 3 l milk

so, R= 3

This operation is carried one more times

so, N = 2

Now,

16/25= (1-3 /M)^2

M=15