Respuesta :

TheMaster999
Sue's age=x
Kelsi's age=y

{x=8y
{x+10=3(y+10)

{x=8y
{x+10=3y+30

{x=8y
{x-3y=20

8y-3y=20
5y=20
y=4

x=8y
x=8*4
x=24


{x=24
{y=4




Regards M.Y.