spearce4180 spearce4180

04-07-2019
Mathematics

contestada

Six years ago my son was one-third my age at that time.

Six years from now he will be one-half my age at that time.

How old is my son?

Respuesta :

konrad509 konrad509

04-07-2019

m - my age

s - son's age

[tex]s-6=\dfrac{m-6}{3}\\s+6=\dfrac{m+6}{2}\\\\3s-18=m-6\\2s+12=m+6\\\\m=3s-12\\m=2s+6\\\\3s-12=2s+6\\s=18[/tex]

He's 18

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