Answer:
27 years
Step-by-step explanation:
Let us assume that you was 18 years old when you graduated the high school.
The going on year is 2018.
You graduated the high school. in 2009.
So, 2018-2009 = 9 years ago you graduated the high school.
9 years ago you was 18 years old so now after 9 years you are 18+9 = 27 years old
So, you are 27 years old now .