Allen is 25 years younger than his mother. In 3 years, the sum of their ages will be 41. What is the present age of Allen's mother?
In 3 years, the sum of their present ages will be added by 3 (from Allen) + 3 (from her mother) = <T>add(3, 3)=6
So, the sum of their present ages is 41 - 6 = <T>subtract(41, 6)=35
Let x be the present age of Allen's mother and x - 25 be the present age of Allen.
So the equation using the sum of their present ages is x + x - 25 = 35.
By combining like terms, the equation becomes 2x = 60.
Hence, Allen's mother is x = 60/2 = <T>divide(60, 2)=30.0 years old now.
