# Greg is 18 years older than his sister Gloria. In 6 years, he will be twice as old as Gloria. How old is each of them now?

##### 1 Answer

Nov 30, 2016

Greg is 30 and Gloria is 12

#### Explanation:

Let's call Greg's age now

We are told Greg is now 18 years older than Gloria. So, we can write:

We also know in 6 years (

From the first equation we can substitute

Now that we know Gloria is 12 we can calculate Greg's age by substituting