If 45% of a certain number is equal to 6/5th of another number, what…

Let the numbers be x, y 

Given, 45% of x = $\frac{6}{5}$ of y 

       $\frac{9}{20}$ of x =  $\frac{6}{5}$ of y 

Thus,  $\frac{x}{y}$ =  $\frac{8}{3}$      

or x : y = 8 : 3