SoI have this question for math:

Question

Andrew is three times as old as his sister Ellie. Andrew is 12 years old.

Which equation can you use to find Ellie’s age?

1. 
   
2. 3 × 12 = a
3. 
   
4. 12 – 3 = a
5. 
   
6. 3 × a = 12
7. 
   
8. a × 12 = 3

What is the answer?

Answer 1

3 x 12 = a = 36 years old