If the daughter is now 10 years old, and the wife is thrice her age, then the wife is 3 * 10 = <<3*10=30>>30 years old.
Since the husband is 5 years older than his wife, he is 30 + 5 = <<30+5=35>>35 years old.
The difference in age between the husband and the daughter is 35 - 10 = <<35-10=25>>25 years.
The husband was thus 25 years when his daughter was born. Answer: \boxed{25}.
A man is 5 years older than his wife and the wife is now thrice as old as their daughter is 10 years old. How old was the man when his daughter was born
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