Hattie’s age at her death was 1/29 of the year of her birth. How old was she in 1900?
We need to look at multiples of 29 in the 1800’s:
29 x 63 = 1827; 29 x 64 = 1856; 29 x 65 = 1885; that’s all.
Born in 1827, died in 1827 + 63 = 1890, too soon.
Born in 1856, died in 1856 + 64 = 1920, OK.
Born in 1885, died in 1885 + 65 = 1950, OK.
So Hattie was either 44 or 15 in 1900.