Correct option is C
Given:
Seven years ago, sum of mother’s and daughter’s ages = 46.
Present age ratio (mother : daughter) = 3 : 1.
Solution:
Let present ages be 3x (mother) and x (daughter).
Seven years ago: (3x-7) + (x-7) = 46.
4x - 14 = 46
4x = 60
x = 15.
So, the daughter’s present age = x =15 years