there are two numbers . if 50 % of the first number is added to the second number , then the second number increases to its 5 - fourth . find the ratio of the first number to the second number ?  Choose the most appropriate option:  A) 1 / 2  B) 5 / 8  C) 6  D) 6 / 7  E) 7

Rationale: let the two numbers be x and y . 50 / 100 * x + y = 5 / 4 y = > 1 / 2 x = 1 / 4 y = > x / y = 1 / 2 a )
Answer: A