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Read the following question and decide which of the statements is sufficient/necessary to answer the question.Question:If positive, what is the value of X/4Y?Statement:1. Y = 3X2. X = 51. Both 1 and 2 together are sufficient.2. 1 alone is sufficient, while 2 alone is not sufficient.3. Both statements alone are sufficient.4. 2 alone is sufficient, while 1 alone is not sufficient. |
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Answer» Correct Answer - Option 2 : 1 alone is sufficient, while 2 alone is not sufficient. Statement 1: We get: Y = 3X ⇒ X/Y = 1/3 Now, we can obtain the value of X/4Y, by simply multiplying the denominator Y by 4 ⇒ X/(4 × Y) = 1/(4 × 3) = 1/12 Hence, Statement 1 can be used alone. Statement 2: We get X = 5. But there is nothing mentioned, using which we can get the value of Y, and hence, the value of X/4Y. Hence, Statement 2 cannot be used alone. ∴ Statement 1 alone is sufficient, while Statement 2 alone is not sufficient. |
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