The denominator of a fraction is 1 less than twice the numerator. If the numerator and denominator are both increased by 1, the fraction becomes 4/5. Find the fraction?
Choose the correct choice from the following options
A) A)2/3
B) B)5/7
C) C)4/7
D) D)5/9
E) E)None of these
Let the numerator and denominator of the fraction be 'n' and 'd' respectively.   d = 2n - 1   (n + 1)/(d + 1) = 4/5   5n + 5 = 4d + 4   5n + 5 = 4(2n - 1) + 4 =&gt; n = 5/3   d = 2n - 1 =&gt; d = 3/7   Hence the fraction is : 5/7   ANSWER:5/7
<result>B</result>
The denominator of a fraction is 1 less than twice the numerator. If the numerator and denominator are both increased by 1, the fraction becomes 4/5. Find the fraction?