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UPSC Civil ServicesPrelims2022General Studies Paper II (CSAT)
Question
QQ69. 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 Y. 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?
Options
- A m = n
- B m > n
- C m < n
- D Cannot be determined due to insufficient data
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Correct Answer
A m = n
Model Answer
Answer: option A, as per UPSC's final answer key (Series A).