The task is to generate the correct answer for a given math problem.

Problem: x varies inversely as square of y . given that y = 3 for x = 1 . the value of x for y = 9 will be equal to :
1 / 9

Problem: if the sides of a cube are in the ratio 5 : 3 . what is the ratio of their diagonals ?
5 : 3'

Problem: at what rate percent on simple interest will rs . 1500 amount to rs . 2000 in 5 years ?

8.33 %