Roman is 15 years older than Robin. If 5 years ago, Roman was 3 times as old as Robin, then find Roman’s present age.

Let the age of Robin be y
Roman is 15 years older than Robin = (y + 15).
So Roman's age 5 years ago = (y + 15 – 5)
Robin's age before 5 years = (y – 5)

5 years ago, Roman is 3 times as old as Robin
(y + 15 – 5) = 3 (y – 5)
(y + 10) = (3y – 15)
2y = 25
y = 12.5
Robin's age = 12.5 years
Roman's age = (y + 15)
= (12.5 + 15)
= 27.5 years.