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?
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.
So when Harry was born, she was 72 years - 50 years = <<72-50=22>>22 years old.
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