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Persona 2 = 5n
3n + 5n = 24
8n = 24
n = 24/8
n = 3
3n = 3 (3) = 9
5n = 5 (3) = 15
Solución :
Persona 1 = 9 años
Persona 2 = 15 años
La edad de la persona mayor es = 15 años