Question

the denominator of a fraction is 1 less than four times the numerator. if 1is added to both the numerator and denominator the fraction becomes 3/8.find the fraction

Answer 1

Let numerator be x.
Then denominator is 4x-1
So, when 1 is added to both the fraction becomes
x+1/4x =3/8
⇒8x+8 = 12x
⇒4x=8
⇒x=2