Least Common Denominator

[Spartacus2000]

In the fraction x/y, where x and y are positive integers, what is the value of y?

(1) The least common denominator of x/y and 1/3 is 6

(2) x = 1

Thanks,

[GmatKiss]

IMO:E

From 1, denominator can be 2 or Six ( insufficient)
From 2, No information about Y
1+2 , Insufficient!