Gabrielle's age is two times Mikhail's age. The sum of their ages is 60. What is Mikhail's age?

Answer 1

Let Mikhail's age be x.
Gabrielle's age is 2x.
The sum of their ages is x + 2x = 60.
Combining like terms, we get 3x = 60.
Dividing both sides by 3, we find that x = 20.
Thus, Mikhail is 20 years old. Answer: \boxed{20}.