question_answer

A fraction becomes\[\frac{1}{3}\], if l is subtracted from both its numerator and denominator b. If 1 is added to numerator and denominator both it becomes\[\frac{1}{2}\], the fraction is:

A) \[\frac{4}{7}\]              

B) \[\frac{2}{7}\]

C) \[\frac{3}{7}\]              

D) \[\frac{1}{7}\]

E) None of these