Let's call the age Rajeev is currently X years old.
In 15 years, Rajeev will be X + 15 years old.
5 years ago, Rajeev was X - 5 years old.
Thus, 5 years from now, Rajeev will be X - 5 + 5 = X years old.
Therefore, in 15 years, Rajeev will be 5 times as old as he was 5 years ago, or 5 * (X - 5) = X + 15.
Solving for X, we get:
5 * (X - 5) = X + 15
5X - 25 = X + 15
4X - 25 = 15
4X = 40
X = 10
Therefore, Rajeev is currently 10 years old.