When I was 10 years old, my sister was half my age. Now that I am 40 years old, how old is my sister ?
When you were 10, you sister was 5 years old. Which means that she is 5 years younger than you. Now that you are 40, your sister is 35.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:

When I was 10 years old, my sister was half my age. Now that I am 40 years old, how old is my sister ?

### Response:

When you were 10, you sister was 5 years old. Which means that she is 5 years younger than you. Now that you are 40, your sister is 35.
