Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Harry is 50 years old. His father is currently 24 years older than he is. How old was his mother when she gave birth to him if she is younger than his father by 1/25 of Harry's current age?

### Response:
Harry's father is 50 years + 24 years = <<50+24=74>>74 years old.
Harry's mother is 1/25 * 50 years = <<1/25*50=2>>2 years younger than his father.
So she is currently 74 years – 2 years = <<74-2=72>>72 years old.
To be able to answer the question we must calculate how old she was when Harry was born, which is 72 years – 50 years = <<72-50=22>>22 years old.
#### 22