The sum of Richard's age and his older brother's age is 63. The difference between their ages is thirteen. How old are Richard and his brother?
Denote Richard's age as X years, therefore his older brother age would be X + 13 years. Thus X + X +13 = 63 2X = 50 X = 25 X + 13 = 38 Answer: Richard is 25 years old, his older brother is 38 years old.