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Bunuel
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If we look at the original condition, we know that there are 2 variables (x and y). In order to match the number of variables to the number of equations, we need 2 equations. Since the condition 1) and the condition 2) each has 1 equation, there is high chance that C is the correct answer. However, as the condition 2) has 2 equations, the condition is sufficient. So, the correct answer is B.
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The answer is B,
The question is basically asking ration between substance X and substance Y.
Statement 1 is clearly insufficient as it only gives information about substance X.
Statement 2 is sufficient as it gives ratio of substance to prepare the pie.
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