The sum of the numerator and denominator of a fraction is 8. If 3 is added to both of the numerator and the denominator, the fraction becomes . Find the fraction.
Let the fraction be x/y.
According to question -
x + y = 8.....(1)
and,
On Cross multiplying, we get -
⇒ 4x + 12 = 3y + 9
⇒ 4x - 3y = - 3.....(2)
From equation (1), we get -
x = 8 - y.....(3)
Substituting the value of x in equation (2), we get -
4(8 - y) - 3y = - 3
⇒ 7y = 35
∴ y = 5
substituting the value of y in equation (3), we get -
x = 3
Thus, the required fraction is 3/5.