Khadija is thrice as old as her daughter. The sum of their ages is 45. What is her daughter's age?
Khadija is thrice as old as her daughter. The sum of their ages is 45. What is her daughter's age?
Explanation
Khadija is thrice as old as her daughter, so:
K = 3D
The sum of their ages is 45:
K + D = 45
3D + D = 45
4D = 45
D = 45/4
D = 11.25 (12)