If 25% of x is 20 less than 15% of 1500, then x is?  Choose the correct choice from the following answers.
A) 872  B) 820  C) 837  D) 840  E) 83

Rationale: "25 % of x = x / 4 ; 15 % of 1500 = 15 / 100 * 1500 = 225 given that , x / 4 = 225 - 20 = > x / 4 = 205 = > x = 820 . answer : b"
Answer: B