Answer:
Ravi’s present age will be 5.
Explanation:
From the given, Let Ravi’s present age is taken as "a" years.
After 15 years, his age = (a+15) years.
By the given, it is identified that the age of Ravi after 15 years is equal to the 4 times of his present age.
Given,
![a+15+4a\\4a-a+15\\3a=15\\a=15/3\\a=5](https://img.qammunity.org/2022/formulas/mathematics/high-school/kquqkco6jetwt87afnreztac82uq60ijil.png)
Then, it has been found that the present age of Ravi is 5 when his age after 15 years will be 4 times of his present age.