If both x and y are positive integers less than 90 and greater than 10, is the sum x + y a multiple of 11?
(1) x - y is a multiple of 22
(2) The tens digit and the units digit of x are the same; the tens digit and the units digit of y are the same
Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
Each statement alone is sufficient to answer the question.
Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
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source: GMAT Pill*
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