very easy-1

Solution by logic: from 5 years ago to 2 years in the future is a total of 7 years. So it takes 7 years to become twice as old. Thus she was 7 and turned 14 in 7 years. The current year is 2 years before she turned 14, so she is 12 years old.

$x+2=2(x-5)\therefore{}x=2x-10-2\therefore{}0=x-12\therefore{}x=12$

Five years ago her age was =x

Two years later her age shall be=y

So two years later she will be 7 years older than five years ago.

So if you add seven to seven years the answer is 14 years which will be the age of her two years later.

So the answer is seven years old.

In 2 years ,her age will be double of her age 5 years back, or 7 years to double

What becomes double when 7 is added to it , seven !