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Last Updated on May 11, 2023
GMAT OFFICIAL GUIDE DS
Solution:
We are given that x and y are positive numbers and need to determine whether (x + 1)/(y + 1) > x/y. Simplifying the question, we have:
Is y(x + 1) > x(y + 1)? (Note that we multiplied each side by y(y + 1), which is allowed because y > 0.)
Is yx + y > xy + x?
Is y > x?
Statement One Alone:
x > 1
Since we do not know anything about y, statement one alone is not sufficient to answer the question.
Statement Two Alone:
x < y
We see that statement two has answered the question; y is greater than x.
Answer: B
