Question

Gabrielle's age is two times Mikhail's age. The sum of their ages is 51. What is Mikhail's age?

Answer 1

Gabrielle is 34; Mikhail is 17

Explanation:

Lets use G for Gabrielle and M for Mikhail

G=2M since Gabrielle is twice as old as Mikhail

G+M=51 since their ages add up to 51

We can do M=51-G and replace M is G=2M with that equation

G=2(51-G)

G=102-2G

3G=102

G=34

Then plug that in to M=51-G

M=51-34

M=17

Hope this helps