Question

There are two containers X and Y. X contains 100 ml of milk and Y contains 100 ml of water. 20 ml of milk from X is transferred to
V. After mixing well, 20 ml of the mixture in Y is transferred back to
X. If m denotes the proportion of milk in X and n denotes the proportion of water in Y, then which one of the following is correct?

A m = n
B m > n
C m < n
D Cannot be determined due to insufficient data
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