This is a 500-600 level DS problem from CAT. It's kinda a stupid question, but I don't see why answer C "Both statements TOGETHER are sufficient" couldn't be the right answer. The correct answer is "E". Couldn't we just solve for y in statement 1 and substitute it in statement 2, which will give us value for x? Also follows the rule of 2 equations, 2 variables -- we must be able to solve for x. Let me know why the answer is E.
