Respuesta :

Gabrielle is 18 and Mikhail is 9

Let Gabrielle's age be = x years

Let Mikhail's age be = y years

As given, Gabrielle's age is two times Mikhail's age

[tex]x=2y[/tex]

The sum of their ages is 27

[tex]x+y=27[/tex]

Putting x=2y, we have,

[tex]2y+y=27[/tex]

[tex]3y=27[/tex]

y=9

As x+y=27, x=18

Hence, Gabrielle's age is 18 years

Mikhail's age is 9 years.