Five years later, my brother's age is equal to that of my brother five years ago, so my brother is ten years older than my brother, and the age difference is 10 years old.

The total age of the two brothers is three times the age difference, and the total age of the two brothers is 30 years old.

The total age is 30, the age difference is 10, the elder brother is (30+ 10)/2=20 years old, and the elder brother is (30- 10)/2= 10 years old.