Difference of two numbers is 1620. If 7.5% of the number is 12.5% of the other number , find the number ? Select:
A) 2660 , 1000
B) 3660 , 2000
C) 3000 , 4160
D) 2430 , 4050
E) 4660 , 3000

Rationale: "let the numbers be x and y . then , 7.5 % of x = 12.5 % of y x = 125 * y / 75 = 5 * y / 3 . now , x - y = 1620 5 * y / 3 – y = 1620 2 * y / 3 = 1620 y = [ ( 1620 * 3 ) / 2 ] = 2430 . one number = 2430 , second number = 5 * y / 3 = 4050 . answer d ."
Answer: D