36% of what number is

Question

36% of what number is 900?

Answer 1

Let n = unknown number; statement says 36% of n = 900.  Furthermore, "of" means multiply, and 36% = 0.36, so

 

0.36n = 900

 

Thus, n = 900/0.36 = 2500

 

Remember this method for many similar problems.