Answer: 22.7556 liters
Step-by-step explanation:
fter the first operation, when 4 liters of milk are taken out and replaced by water, the quantity of milk in the container becomes
0.75
�
0.75M (since 25% of
�
M is replaced by water).
After the second operation, again 4 liters of milk are taken out and replaced by water. At this point, the quantity of milk in the container becomes
0.75
×
0.75
�
0.75×0.75M, which is
0.5625
�
0.5625M.
According to the given information, the remaining milk in the container after the two operations is 12.8 liters. Therefore, we can set up an equation:
0.5625
�
=
12.8
0.5625M=12.8
Now, we can solve for
�
M:
�
=
12.8
0.5625
M=
0.5625
12.8
�
≈
22.7556
M≈22.7556
