If the numerator of a fraction is increased by 20% and its denominator is diminished by 25% value of the fraction is 2/15. Find the original fraction. Choose the correct choice from the following choices:  A) 1 / 12  B) 1 / 8  C) 1 / 6  D) 1 / 4  E) 1 / 2

Rationale: x * ( 120 / 100 ) - - - - - - - - - - - - - - - - = 2 / 15 y * ( 75 / 100 ) x / y = 1 / 12 answer : a
Answer: A