If xy=1, x/y=36, for positive numbers x and y, y=?  Choose the correct choice from the following answers: A) 1/2 B) 2 C) 1/3 D) 3 E) 1/6
Very easy question. 2 variables and 2 easy equations.   xy=1 ---&gt; x=1/y - (i)   x/y=36 ---&gt; replacing (i) here ---&gt; 1/(y^2)=36 ---&gt; y^2=1/36 ---&gt; y=1/6 or -1/6   The question states that x and y are positive integers. Therefore, y=1/6 is the answer.   Answer 1/6.
<result>E</result>
If xy=1, x/y=36, for positive numbers x and y, y=?