If grandma's house = x, then the apartment building = x + 12
x + 12 + 4 = 2(x+4)
Solve for x.
The apartment building where Herman lives was built 12 years before his grandmother's house. In 4 years, the apartment building will be twice as many years old as Herman's grandmother's house. How many years ago was Herman's grandmother's house built?
1 answer