The ratio of the present ages of A and B is 2 : 3. Four years hence, ratio of their ages will be 5 : 7 respectively. What is the present age of A ?
Let present ages of A and B be '2x' and '3x'.
According to question,
$$\frac{2x+4}{3x+4}=\frac{5}{7}$$.
$$14x+28=15x+20$$.
$$x=8$$.
Hence, present age of A = 2x.
= 16 years.
So, Option D is correct.
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