If the ratio of the ages of Maya and Chhaya is 6 : 5 at present, and fifteen years from now, the ratio will get changed to 9 : 8, then find Maya's present age.

Answer: Option B

Let Maya's and Chhaya's present age is 6x and 5x respectively
And,
$$\frac{6\text{x}+15}{5\text{x}+15}=\frac{9}{8}$$
Or, 48x + 120 = 45x = 135
Or, 3x = 15
Or, x = 5
Present age of Maya = 6x = 30