Question

After 12 years, sauna shall be three times as old as she was 4 years old find her present age

Answer 1

Let the present age of Sauna be x years.

After 12 years her age = (x+12) years.

Before 4 years her age = (x-4) years.

According to condition given in question,

$(x + 12 ) \: = \: 3 \times (x - 4) \\ \\ x + 12 = 3x - 12 \\ \\ 2x = 24\\ \\ x = \frac{24}{2} \\ \\ x = 12years$

Her present age is 12 years.

And after 12 years she will be of 24 years.

Before 4 years she was of 8 years.

So , 8×3 = 24

So, the given condition is verified here.