Question

Silesh is 20 years old and sushma is 4 years old. In how many years will twice as age as sushma

Answer 1

Let in x year silesh will be twice of sushma
20 + x = 2(4+x)
20 + x = 8 + 2x
X = 12

So after 12 years silesh will be twice of sushma

Answer 2

Present ages of Silesh and Sushma are 20 years and 4 years respectively.

According to the question, we are meant to find the number of years when Sil will be twice as old as Sush.

Let the number of years be y.

$Now, \: 20+y = 2(4+y)$
Or 20 + y = 8 + 2y
Or 20-8 = y
Or y = 12

//Verification :- 20 + 12 = 2(4+12)
Or 32 = 32
The answer is true.