If xy=25, x/y=36, for positive numbers x and y, y=?
Choose one:	A) 1 / 2	B) 2	C) 1 / 3	D) 3	E) 5 / 6

Rationale: "very easy question . 2 variables and 2 easy equations . xy = 25 - - - > x = 25 / y - ( i ) x / y = 36 - - - > replacing ( i ) here - - - > 25 / ( y ^ 2 ) = 36 - - - > y ^ 2 = 25 / 36 - - - > y = 5 / 6 or - 5 / 6 the question states that x and y are positive integers . therefore , y = 5 / 6 is the answer . answer e ."
Answer: E