Question

There is a tank of 100 litres capacity, which is initially completely filled with water. Out of that,
10 litres of the contents of the tank are taken out and replaced with alcohol. If this process is
carried out in all 4 times, how much water (in litres) is left in the tank?
1] Less than 50 litres
2] Between 50 and 55 litres
3] Between 55 and 60 litres >
4] More than 60 litres​

Answer 1

Hey,

Answer is between 55 and 60 litres because if we replace 10 litres of water with alcohol 4 times then total water left is 60 litres, which is between 55 and 60 litres...

please mark as brainliest...

Answer 2

Answer:

more than 60 litres

Step-by-step explanation:

after each operation, amount of water remaining=90% of water at the end of previous operation.

so the required answer ,

= 100* (9/10)^4 =65.61 litres .

henceforth (4)