Statement A: X = 3Y ......... Insufficient
Statement B: X and Y can have multiple to satisfy X - Y = 9 .......... Insufficient
On combining,
Y = X - 9
Therefore, X = 3 (X - 9)
X = 3X - 27
2X = 27
X = 27/2
Therefore C
Statement B: X and Y can have multiple to satisfy X - Y = 9 .......... Insufficient
On combining,
Y = X - 9
Therefore, X = 3 (X - 9)
X = 3X - 27
2X = 27
X = 27/2
Therefore C
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