Question

After 15 years , Raju will be four times as old as he is now. His present age is​

Answer 1

let Raju age be x

x+15=4x

15=4x-x=3x

15=3x

x=15/3=5

Raju's present age is 5

hope it helps you

Answer 2

Answer:

Let his present age be $x$ years.

Then after 15 years, his age will be $x + 15$.

We also know that after 15 years, his age will be four times his current age.

So the equation formed is below

 $4x = x + 15\\4x - x = 15\\3x = 15\\x = 15/3 \\x = 5$

Therefore his present age = 5 years

The verification of solution

his present age = 5 years

After 15 years, his age = 20 years which is four times his present age.

So solution is also verified.

Step-by-step explanation: I have checked the solution many times. It is totally correct .

Hope you like it and please mark me as the  brainliest.