x varies inversely as square of y. Given that y=3 for x=1. The value of x for y = 5 will be equal to: Choose the correct answer:
A) 3
B) 6
C) 1 / 9
D) 1 / 3
E) 9 / 25

Rationale: "explanation : solution : given x = k / y ^ 2 , where k is constant . now , y = 3 and x = 1 gives k = 9 . . ' . x = 9 / y ^ 2 = > x = 9 / 5 ^ 2 = 9 / 25 answer : e"
Answer: E