Respuesta :

Answer:

Step-by-step explanation:

Elga's age = x

Alvin's age = 3*x = 3x

Sum of their ages = 24

x + 3x = 24

4x = 24

Divide both sides by 4

x = 24/4

x = 6

3x = 3*6 = 18

Elga's age = 6 years

Alvin's age = 18 years